{"id":19240,"date":"2026-06-30T08:26:11","date_gmt":"2026-06-30T06:26:11","guid":{"rendered":"https:\/\/roder.it\/inspection\/dimension-and-geometry\/"},"modified":"2026-11-06T19:42:27","modified_gmt":"2026-11-06T18:42:27","slug":"dimension-and-geometry","status":"publish","type":"page","link":"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/","title":{"rendered":"Length and width"},"content":{"rendered":"\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-is-layout-17c5c485 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:46%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"638\" height=\"599\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2019\/05\/Untitled.png\" alt=\"dimensional check of centre distance and position of electronic components with machine vision systems\" class=\"has-border-color wp-image-558\" style=\"border-color:#000000;border-width:1px;border-radius:10px\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2019\/05\/Untitled.png 638w, https:\/\/roder.it\/wp-content\/uploads\/2019\/05\/Untitled-300x282.png 300w\" sizes=\"auto, (max-width: 638px) 100vw, 638px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:54%\">\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-51b2f3cb wp-block-group-is-layout-constrained\" style=\"border-radius:15px;background-color:#eef3f6;padding-top:28px;padding-right:30px;padding-bottom:28px;padding-left:30px\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#225f78;font-size:13px;font-weight:700;letter-spacing:1px;text-transform:uppercase\">RODER \u00b7 Inspection \u00b7 Dimensions and geometry<\/p>\n\n\n\n<h2 class=\"wp-block-heading roder-hero-title has-ti-accent-color has-text-color\">Length and width<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>dimension<\/strong> and the <strong>geometry<\/strong> are among the fundamental quantities in industrial quality control. Measuring them correctly means ensuring that a product complies with tolerances, conforms to specifications and maintains consistent performance. In this section, devoted to <em>Inspection<\/em>, we examine the physical quantity itself and the methods for measuring it, with particular attention to measuring the <strong>length of moving materials<\/strong> using <a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/\">optical speed meters and encoders<\/a>.  <\/p>\n<\/div>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-32518b43 wp-block-group-is-layout-constrained\" style=\"border-radius:12px;background-color:#eef3f6;padding-top:16px;padding-right:22px;padding-bottom:16px;padding-left:22px\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#225f78;font-size:13px;font-weight:700;letter-spacing:1px;text-transform:uppercase\">On this page<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-4ab3db7f wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list is-style-checkbox has-link-color wp-elements-1\">\n<li><a href=\"#a-cosa-serve\">What the measurement is for: length and width<\/a><\/li>\n\n\n<li><a href=\"#che-cosa-si-intende-per-dimensione-e-geometria\">What dimension and geometry mean<\/a><\/li>\n\n\n<li><a href=\"#la-sfida-della-misura-su-materiale-in-movimento\">The challenge of measuring moving material<\/a><\/li>\n\n\n<li><a href=\"#approfondimento-la-lunghezza-in-continuo\">In depth: continuous length<\/a><\/li>\n\n\n<li><a href=\"#perche-la-misura-ottica-della-dimensione\">Why optical measurement of dimension<\/a><\/li>\n\n\n<li><a href=\"#dalla-grandezza-alla-soluzione\">From the quantity to the solution<\/a><\/li>\n\n\n<li><a href=\"#tolleranze-e-valore-contrattuale-della-misura\">Tolerances and the contractual value of the measurement<\/a><\/li>\n\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list is-style-checkbox has-link-color wp-elements-2\">\n<li><a href=\"#misura-statica-e-misura-in-linea\">Static measurement and in-line measurement<\/a><\/li>\n\n\n<li><a href=\"#geometria-e-controllo-di-forma\">Geometry and form inspection<\/a><\/li>\n\n\n<li><a href=\"#standardizzare-la-misura-dimensionale\">Standardising dimensional measurement<\/a><\/li>\n\n\n<li><a href=\"#il-ruolo-del-supporto-tecnico\">The role of technical support<\/a><\/li>\n\n\n<li><a href=\"#domande-frequenti\">Frequently asked questions<\/a><\/li>\n\n\n<li><a href=\"#prodotti-collegati\">Related products<\/a><\/li>\n\n\n<li><a href=\"#in-questa-sezione\">The pages in this section<\/a><\/li>\n\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"a-cosa-serve\">What the measurement is for: length and width <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<p class=\"wp-block-paragraph\">Unlike the <a href=\"https:\/\/roder.it\/?page_id=14997\">Technologies<\/a> (operating theory) and <a href=\"https:\/\/roder.it\/?page_id=14994\">Applications and solutions<\/a> (practical cases) sections, the focus here is on the <strong>measured quantity<\/strong>: what it represents, how it is defined and which instruments determine it accurately.<\/p>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"che-cosa-si-intende-per-dimensione-e-geometria\">What is meant by dimension and geometry <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">The <strong>dimension<\/strong> expresses the extent of an object along one direction: length, width, thickness, diameter. The <strong>geometry<\/strong>, on the other hand, describes the shape and the spatial relationships between elements: straightness, flatness, ovality, profile. In industrial inspection both are subject to tolerances, that is, to permitted deviations from a nominal value. Consequently the quality of a product depends on the ability to measure these quantities accurately and repeatably, both on stationary parts and, above all, on materials in continuous production.   <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Among the dimensions, <strong>length<\/strong> plays a special role in continuous processes: strip, wire, tube, panels and profiles are produced, cut to length and counted in metres. Measuring the length of a material that is running past, however, calls for a different approach from static measurement. <\/p>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"la-sfida-della-misura-su-materiale-in-movimento\">The challenge of measuring moving material <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">When the material is moving, the length measurement is obtained by integrating the <strong>speed<\/strong> of the material over time. Historically this was done with contact measuring wheels, which however suffer from <strong>slippage<\/strong> and <strong>wear<\/strong>: two phenomena that introduce errors varying over time. In modern industrial processes, however, length accuracy is often a contractual requirement. This is why non-contact optical measurement has become established.   <\/p>\n\n\n\n<figure class=\"wp-block-image alignleft size-large is-resized has-custom-border\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-schema_principio_funzionamento_vlm500-web_image-1200x1200-1.webp\" alt=\"Principle of optical length measurement on moving material\" class=\"has-border-color wp-image-0\" style=\"border-color:#000000;border-width:1px;border-radius:10px;aspect-ratio:4\/3;object-fit:contain;width:300px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">An <strong>optical speed meter<\/strong> measures the speed of the material by illuminating it with LED light and analysing the reflected light; by integrating the speed, the length is obtained without any contact. In this way the accuracy remains stable over time and the measurement is valid even on hot, thin or delicate materials. <\/p>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"approfondimento-la-lunghezza-in-continuo\">In depth: continuous length <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Length measurement on materials in continuous production is dealt with in detail on the <a href=\"https:\/\/roder.it\/controlli\/dimensione-e-geometria\/lunghezza-in-continuo\/\">Continuous length<\/a> page, where we examine accuracy, resolution and signal integration. It is the quantity that <a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm500\/\">VLM500 optical speed meters<\/a> and <a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm60\/\">VLM60 optical encoders<\/a> determine with the greatest reliability. <\/p>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"perche-la-misura-ottica-della-dimensione\">Why optical dimension measurement <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<ul class=\"wp-block-list is-style-checkbox has-link-color wp-elements-3\">\n<li>Length measurement without contact, without slippage or wear<\/li>\n\n\n<li>Accuracy down to &lt; 0.025 % and repeatability that remains constant over time<\/li>\n\n\n<li>Independence from the material: metal, paper, wood, plastic, textiles<\/li>\n\n\n<li>Valid also on hot, thin or fast-moving materials<\/li>\n\n\n<li>Encoder outputs compatible with existing counting systems<\/li>\n\n<\/ul>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"dalla-grandezza-alla-soluzione\">From the quantity to the solution <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Once the quantity is understood, the next step is to choose the instrument. The <a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/\">optical speed meters and encoders<\/a> page brings together the ASTech range, while in <a href=\"https:\/\/roder.it\/?page_id=14994\">Applications and solutions<\/a> we show how length measurement translates into cutting to length, metre counting and synchronisation in the various sectors. Finally, for the theory of the optical method, we refer you to <a href=\"https:\/\/roder.it\/?page_id=15000\">Optics and LASER<\/a>.  <\/p>\n\n\n\n<div class=\"wp-block-group alignwide is-layout-grid wp-container-core-group-is-layout-b251d530 wp-block-group-is-layout-grid\">\n<div class=\"wp-block-group has-border-color has-white-background-color has-background is-layout-constrained wp-container-core-group-is-layout-10ff9433 wp-block-group-is-layout-constrained\" style=\"border-color:#e0e0e0;border-width:1px;border-radius:8px;padding-top:16px;padding-right:16px;padding-bottom:16px;padding-left:16px\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm500\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1.webp\" alt=\"VLM500 optical speed meters\" style=\"border-radius:6px;aspect-ratio:4\/3;object-fit:contain\"\/><\/a><\/figure>\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.385), 17px);\">VLM500 optical speed meters<\/h3>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">Speeds up to 50 m\/s, uncertainty &lt; 0.025 %, CCD spatial filter.<\/p>\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size\" style=\"font-size:14px\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm500\/\">Discover<\/a><\/div>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group has-border-color has-white-background-color has-background is-layout-constrained wp-container-core-group-is-layout-10ff9433 wp-block-group-is-layout-constrained\" style=\"border-color:#e0e0e0;border-width:1px;border-radius:8px;padding-top:16px;padding-right:16px;padding-bottom:16px;padding-left:16px\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm60\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm60-vlm60_foto_prodotto_vista_anteriore-web_image-480x480-1.webp\" alt=\"VLM60 optical encoder\" style=\"border-radius:6px;aspect-ratio:4\/3;object-fit:contain\"\/><\/a><\/figure>\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.385), 17px);\">VLM60 optical encoder<\/h3>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">A replacement for measuring wheels, measuring down to 0 m\/s.<\/p>\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size\" style=\"font-size:14px\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm60\/\">Discover<\/a><\/div>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group has-border-color has-white-background-color has-background is-layout-constrained wp-container-core-group-is-layout-10ff9433 wp-block-group-is-layout-constrained\" style=\"border-color:#e0e0e0;border-width:1px;border-radius:8px;padding-top:16px;padding-right:16px;padding-bottom:16px;padding-left:16px\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-velocimetri_encoder_ottici_misure_senza-web_image-292x292-1.webp\" alt=\"Optical encoder speed meters\" style=\"border-radius:6px;aspect-ratio:4\/3;object-fit:contain\"\/><\/a><\/figure>\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.385), 17px);\">Optical encoder speed meters<\/h3>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">Overview of the optical speed meter and encoder family.<\/p>\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size\" style=\"font-size:14px\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/\">Discover<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"tolleranze-e-valore-contrattuale-della-misura\">Tolerances and the contractual value of measurement <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">In dimensional inspection the measurement is not an end in itself: it establishes the conformity of the product against a tolerance and, often, it has contractual value. A declared length must correspond to the real one, because invoicing and acceptance of the product are based on it. For this reason the accuracy and the repeatability of the measuring instrument are essential requirements, and stability over time becomes as important as the initial precision.  <\/p>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"misura-statica-e-misura-in-linea\">Static measurement and in-line measurement <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">The dimension of a stationary part is measured with traditional instruments such as calipers or optical vision systems. The dimension of a moving material, on the other hand, calls for a dynamic approach: the speed is measured and integrated over time. This distinction is fundamental, because it determines the choice of instrument. Optical speed meters are designed precisely for in-line measurement, where the material runs continuously and cannot be stopped.   <\/p>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"geometria-e-controllo-di-forma\">Geometry and form inspection <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Besides length, geometry includes quantities such as straightness, flatness, ovality and profile, which call for dedicated instruments such as scanners and profilometers. In the Inspection pages these quantities are dealt with separately; in this section the focus remains on linear dimension and, in particular, on the length of moving materials, where optical speed meters offer the greatest advantage over contact methods. <\/p>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"standardizzare-la-misura-dimensionale\">Standardizing dimensional measurement <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Adopting a single length measurement principle across several lines simplifies spare parts, procedures and staff training, reducing the overall complexity of the plant. The availability of the data on encoder, analog and fieldbus outputs also makes it possible to integrate the measurement uniformly with the various control systems, from the single counter to the departmental supervisor, without having to manage different interfaces for each machine. <\/p>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"il-ruolo-del-supporto-tecnico\">The role of technical support <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">The choice of instrument, of the working distance and of any protective accessories depends on the specific application: type of material, line speed, geometry of the passage and ambient conditions. For this reason a preliminary assessment, carried out together with RODER technical support, makes it possible to define the optimum configuration and to obtain the greatest accuracy and repeatability over time, avoiding needless oversizing. <\/p>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"domande-frequenti\">Frequently asked questions <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-dim-1\"><strong class=\"schema-faq-question\">What is the difference between dimension and geometry?<\/strong> <p class=\"schema-faq-answer\">Dimension expresses the extent along one direction (length, width, thickness, diameter); geometry describes shape and spatial relationships such as straightness, flatness and profile.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-dim-2\"><strong class=\"schema-faq-question\">How is the length of a moving material measured?<\/strong> <p class=\"schema-faq-answer\">By integrating the speed of the material over time. An optical speed meter measures the speed without contact and derives the length from it, without slippage or wear. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-dim-3\"><strong class=\"schema-faq-question\">Why not use a measuring wheel?<\/strong> <p class=\"schema-faq-answer\">The contact wheel is subject to slippage and wear, which introduce errors varying over time; optical measurement, by contrast, maintains constant accuracy.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-dim-4\"><strong class=\"schema-faq-question\">What accuracy is achieved on length?<\/strong> <p class=\"schema-faq-answer\">With the VLM500 the uncertainty is below 0.025 % at the nominal distance; the VLM60 offers an uncertainty below 1 %.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-dim-5\"><strong class=\"schema-faq-question\">On which materials does optical measurement work?<\/strong> <p class=\"schema-faq-answer\">On almost all surfaces: metal, paper, wood, plastic, textiles and rubber, even hot, thin or shiny ones.<\/p> <\/div> <\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"prodotti-collegati\">Related products <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">The RODER instruments for this application. Go to the relevant catalogue pages for models, technical data and documentation. <\/p>\n\n\n\n<div class=\"wp-block-group is-layout-grid wp-container-core-group-is-layout-b251d530 wp-block-group-is-layout-grid\">\n<div class=\"wp-block-group has-border-color has-white-background-color has-background is-layout-constrained wp-container-core-group-is-layout-10ff9433 wp-block-group-is-layout-constrained\" style=\"border-color:#e0e0e0;border-width:1px;border-radius:8px;padding:16px\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/products\/industrial-laser-distance-sensors\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2020\/01\/ldm_41_42_series_laser_distance_meters_industrial_applications_masterimage.png\" alt=\"Industrial LASER distance sensors\" style=\"border-radius:6px;aspect-ratio:4\/3;object-fit:contain\"\/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.385), 17px);\"><a href=\"https:\/\/roder.it\/en\/products\/industrial-laser-distance-sensors\/\">Industrial LASER distance sensors<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">LDM LASER distance meters for non-contact distance, position and level measurement.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-custom-font-size wp-element-button\" href=\"https:\/\/roder.it\/en\/products\/industrial-laser-distance-sensors\/\" style=\"font-size:14px\">Browse the catalogue<\/a><\/div>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group has-border-color has-white-background-color has-background is-layout-constrained wp-container-core-group-is-layout-10ff9433 wp-block-group-is-layout-constrained\" style=\"border-color:#e0e0e0;border-width:1px;border-radius:8px;padding:16px\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/products\/optical-encoder-speed-meters\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_nastro_continuo_tappeti_continui-web_image-300x300-1.webp\" alt=\"Optical encoder velocimeters\" style=\"border-radius:6px;aspect-ratio:4\/3;object-fit:contain\"\/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.385), 17px);\"><a href=\"https:\/\/roder.it\/en\/products\/optical-encoder-speed-meters\/\">Optical encoder velocimeters<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">VLM speed meters for non-contact measurement of speed and length.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-custom-font-size wp-element-button\" href=\"https:\/\/roder.it\/en\/products\/optical-encoder-speed-meters\/\" style=\"font-size:14px\">Browse the catalogue<\/a><\/div>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group has-border-color has-white-background-color has-background is-layout-constrained wp-container-core-group-is-layout-10ff9433 wp-block-group-is-layout-constrained\" style=\"border-color:#e0e0e0;border-width:1px;border-radius:8px;padding:16px\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/products\/diacheck-ct-series-digital-arch-gauges\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2022\/12\/DIACHECK-ESTERNI.png\" alt=\"DIACHECK-CT digital arch gauges\" style=\"border-radius:6px;aspect-ratio:4\/3;object-fit:contain\"\/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.385), 17px);\"><a href=\"https:\/\/roder.it\/en\/products\/diacheck-ct-series-digital-arch-gauges\/\">DIACHECK-CT digital arch gauges<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">DIACHECK-CT arch gauges for measuring radii and diameters of curved products.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-custom-font-size wp-element-button\" href=\"https:\/\/roder.it\/en\/products\/diacheck-ct-series-digital-arch-gauges\/\" style=\"font-size:14px\">Browse the catalogue<\/a><\/div>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group has-border-color has-white-background-color has-background is-layout-constrained wp-container-core-group-is-layout-10ff9433 wp-block-group-is-layout-constrained\" style=\"border-color:#e0e0e0;border-width:1px;border-radius:8px;padding:16px\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/products\/fork-thickness-gauges\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/kaefer-k200-spessimetro_a_forcella_analogico_k200-web_image-1000x1000-1.webp\" alt=\"K&#xE4;fer fork thickness gauges\" style=\"border-radius:6px;aspect-ratio:4\/3;object-fit:contain\"\/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.385), 17px);\"><a href=\"https:\/\/roder.it\/en\/products\/fork-thickness-gauges\/\">K\u00e4fer fork thickness gauges<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">K\u00e4fer fork thickness gauges, analog and digital, for dimensional inspection.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-custom-font-size wp-element-button\" href=\"https:\/\/roder.it\/en\/products\/fork-thickness-gauges\/\" style=\"font-size:14px\">Browse the catalogue<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading has-ti-accent-color has-text-color\" id=\"in-questa-sezione\">The pages in this section <a class=\"roder-up\" href=\"#\" title=\"Back to top\" aria-label=\"Torna all&#x2019;inizio della pagina\">\u2191 top<\/a><\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">The in-depth pages for this quantity: techniques, selection criteria and instrument families.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-17c5c485 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-group has-border-color is-layout-constrained wp-container-core-group-is-layout-4c96c1b2 wp-block-group-is-layout-constrained\" style=\"border-color:#225f78;border-width:2px;border-radius:14px;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-group has-background is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-64b06f47 wp-block-group-is-layout-flex\" style=\"border-top-left-radius:11px;border-top-right-radius:11px;background-color:#225f78;padding-top:12px;padding-right:20px;padding-bottom:12px;padding-left:20px\">\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-7b7bb4f4 wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#cfe6f0;margin-top:0;margin-bottom:0;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase\">In depth<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-4\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.769), 20px);\"><a href=\"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/contact-measurement-of-length-width-and-thickness\/\">Contact measurement of length, width and thickness<\/a><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(17.905px, 1.119rem + ((1vw - 3.2px) * 1.294), 28px);font-weight:700\">\u2192<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-bf2022b5 wp-block-columns-is-layout-flex\" style=\"padding-top:16px;padding-right:18px;padding-bottom:16px;padding-left:18px\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:30%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/contact-measurement-of-length-width-and-thickness\/\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/11\/mitutoyo-calibro-digitale-absolute-digimatic-573-182-30.webp\" alt=\"Mitutoyo ABSOLUTE Digimatic digital caliper\" class=\"has-border-color wp-image-35890\" style=\"border-color:#000000;border-width:1px;border-radius:10px;aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/11\/mitutoyo-calibro-digitale-absolute-digimatic-573-182-30.webp 800w, https:\/\/roder.it\/wp-content\/uploads\/2026\/11\/mitutoyo-calibro-digitale-absolute-digimatic-573-182-30-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/11\/mitutoyo-calibro-digitale-absolute-digimatic-573-182-30-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/11\/mitutoyo-calibro-digitale-absolute-digimatic-573-182-30-768x768.webp 768w, https:\/\/roder.it\/wp-content\/uploads\/2026\/11\/mitutoyo-calibro-digitale-absolute-digimatic-573-182-30-600x600.webp?crop=1 600w, https:\/\/roder.it\/wp-content\/uploads\/2026\/11\/mitutoyo-calibro-digitale-absolute-digimatic-573-182-30-400x400.webp?crop=1 400w, https:\/\/roder.it\/wp-content\/uploads\/2026\/11\/mitutoyo-calibro-digitale-absolute-digimatic-573-182-30-200x200.webp?crop=1 200w, https:\/\/roder.it\/wp-content\/uploads\/2026\/11\/mitutoyo-calibro-digitale-absolute-digimatic-573-182-30-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:70%\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4a5b66;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.128), 15px);\">Contact measurements of length, width and thickness remain the benchmark for precision and simplicity: dial indicators, fork thickness gauges and arch gauges\u2026<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size\" style=\"font-size:14px;font-weight:700\"><a class=\"wp-block-button__link has-text-color has-background wp-element-button\" href=\"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/contact-measurement-of-length-width-and-thickness\/\" style=\"border-radius:8px;color:#ffffff;background-color:#225f78;padding-top:9px;padding-right:16px;padding-bottom:9px;padding-left:16px\">Find out more \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-group has-border-color is-layout-constrained wp-container-core-group-is-layout-4c96c1b2 wp-block-group-is-layout-constrained\" style=\"border-color:#225f78;border-width:2px;border-radius:14px;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-group has-background is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-64b06f47 wp-block-group-is-layout-flex\" style=\"border-top-left-radius:11px;border-top-right-radius:11px;background-color:#225f78;padding-top:12px;padding-right:20px;padding-bottom:12px;padding-left:20px\">\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-7b7bb4f4 wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#cfe6f0;margin-top:0;margin-bottom:0;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase\">In depth<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-5\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.769), 20px);\"><a href=\"https:\/\/roder.it\/en\/inspection\/diameter-ovality-profile-and-form\/non-contact-width-and-length-gauges\/\">Non-contact width and length gauges<\/a><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(17.905px, 1.119rem + ((1vw - 3.2px) * 1.294), 28px);font-weight:700\">\u2192<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-bf2022b5 wp-block-columns-is-layout-flex\" style=\"padding-top:16px;padding-right:18px;padding-bottom:16px;padding-left:18px\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:30%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/inspection\/diameter-ovality-profile-and-form\/non-contact-width-and-length-gauges\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"1200\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2022\/10\/dimes_ltm_lwm_immagine_produzione.png\" alt=\"laser thickness gauge for measuring the thickness of metal strips, sheets and continuous strips in pickling and cutting lines\" class=\"has-border-color wp-image-6100\" style=\"border-color:#000000;border-width:1px;border-radius:10px;aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2022\/10\/dimes_ltm_lwm_immagine_produzione.png 1600w, https:\/\/roder.it\/wp-content\/uploads\/2022\/10\/dimes_ltm_lwm_immagine_produzione-300x225.png 300w, https:\/\/roder.it\/wp-content\/uploads\/2022\/10\/dimes_ltm_lwm_immagine_produzione-1024x768.png 1024w, https:\/\/roder.it\/wp-content\/uploads\/2022\/10\/dimes_ltm_lwm_immagine_produzione-768x576.png 768w, https:\/\/roder.it\/wp-content\/uploads\/2022\/10\/dimes_ltm_lwm_immagine_produzione-1536x1152.png 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:70%\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4a5b66;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.128), 15px);\">Laser and optical instruments for the non-contact measurement of the width and length of webs, sheet metal and profiles.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size\" style=\"font-size:14px;font-weight:700\"><a class=\"wp-block-button__link has-text-color has-background wp-element-button\" href=\"https:\/\/roder.it\/en\/inspection\/diameter-ovality-profile-and-form\/non-contact-width-and-length-gauges\/\" style=\"border-radius:8px;color:#ffffff;background-color:#225f78;padding-top:9px;padding-right:16px;padding-bottom:9px;padding-left:16px\">Find out more \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-17c5c485 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-group has-border-color is-layout-constrained wp-container-core-group-is-layout-4c96c1b2 wp-block-group-is-layout-constrained\" style=\"border-color:#225f78;border-width:2px;border-radius:14px;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-group has-background is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-64b06f47 wp-block-group-is-layout-flex\" style=\"border-top-left-radius:11px;border-top-right-radius:11px;background-color:#225f78;padding-top:12px;padding-right:20px;padding-bottom:12px;padding-left:20px\">\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-7b7bb4f4 wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#cfe6f0;margin-top:0;margin-bottom:0;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase\">In depth<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-6\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.769), 20px);\"><a href=\"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/non-contact-speed-and-length-measurement\/\">Non-contact speed and length measurement<\/a><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(17.905px, 1.119rem + ((1vw - 3.2px) * 1.294), 28px);font-weight:700\">\u2192<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-bf2022b5 wp-block-columns-is-layout-flex\" style=\"padding-top:16px;padding-right:18px;padding-bottom:16px;padding-left:18px\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:30%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/non-contact-speed-and-length-measurement\/\"><img loading=\"lazy\" decoding=\"async\" width=\"510\" height=\"510\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1.webp\" alt=\"ASTECH VLM500: product photo in axonometric view, front view of the optical encoder\" class=\"has-border-color wp-image-14956\" style=\"border-color:#000000;border-width:1px;border-radius:10px;aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1.webp 510w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 510px) 100vw, 510px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:70%\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4a5b66;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.128), 15px);\">Continuous length measurement concerns materials produced without interruption: strips, wires, cables, tubes, profiles, panels and fabrics. In these cases the\u2026 <\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size\" style=\"font-size:14px;font-weight:700\"><a class=\"wp-block-button__link has-text-color has-background wp-element-button\" href=\"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/non-contact-speed-and-length-measurement\/\" style=\"border-radius:8px;color:#ffffff;background-color:#225f78;padding-top:9px;padding-right:16px;padding-bottom:9px;padding-left:16px\">Find out more \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-group has-border-color is-layout-constrained wp-container-core-group-is-layout-4c96c1b2 wp-block-group-is-layout-constrained\" style=\"border-color:#225f78;border-width:2px;border-radius:14px;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-group has-background is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-64b06f47 wp-block-group-is-layout-flex\" style=\"border-top-left-radius:11px;border-top-right-radius:11px;background-color:#225f78;padding-top:12px;padding-right:20px;padding-bottom:12px;padding-left:20px\">\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-7b7bb4f4 wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#cfe6f0;margin-top:0;margin-bottom:0;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase\">In depth<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-7\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.769), 20px);\"><a href=\"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/non-contact-distance-measurement\/\">Non-contact distance measurement<\/a><\/h3>\n<\/div>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ffffff;margin-top:0;margin-bottom:0;font-size:clamp(17.905px, 1.119rem + ((1vw - 3.2px) * 1.294), 28px);font-weight:700\">\u2192<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-bf2022b5 wp-block-columns-is-layout-flex\" style=\"padding-top:16px;padding-right:18px;padding-bottom:16px;padding-left:18px\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:30%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/non-contact-distance-measurement\/\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/10\/15-09-98-main.webp\" alt=\"ASTECH LDM42EI laser distance meter with EtherNet\/IP interface, up to 150 m &#x2013; set\" class=\"has-border-color wp-image-32261\" style=\"border-color:#000000;border-width:1px;border-radius:10px;aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/10\/15-09-98-main.webp 600w, https:\/\/roder.it\/wp-content\/uploads\/2026\/10\/15-09-98-main-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/10\/15-09-98-main-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/10\/15-09-98-main-400x400.webp?crop=1 400w, https:\/\/roder.it\/wp-content\/uploads\/2026\/10\/15-09-98-main-200x200.webp?crop=1 200w, https:\/\/roder.it\/wp-content\/uploads\/2026\/10\/15-09-98-main-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:70%\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4a5b66;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.128), 15px);\">Non-contact distance measurement with LASER distance meters makes it possible to detect distances, positions and levels quickly and accurately, even on moving objects\u2026<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size\" style=\"font-size:14px;font-weight:700\"><a class=\"wp-block-button__link has-text-color has-background wp-element-button\" href=\"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/non-contact-distance-measurement\/\" style=\"border-radius:8px;color:#ffffff;background-color:#225f78;padding-top:9px;padding-right:16px;padding-bottom:9px;padding-left:16px\">Find out more \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\"><em>The information on this page is provided for information purposes. Although it has been compiled with the greatest care, it may contain transcription errors or typos: for precise, up-to-date information please contact RODER SRL directly. <\/em><\/p>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading has-ti-accent-color has-text-color has-link-color wp-elements-8\">Contacts &amp; Information<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Contact for general information : <a href=\"mailto:info@roder.it\">info@roder.it<\/a><br\/><br\/>Machine Vision Division of RODER : <a href=\"https:\/\/www.visiotronix.com\">www.visiotronix.com<\/a><br\/>RODER Instruments Division : <a href=\"https:\/\/www.visiotronix.com\">www.innovacheck.com<\/a><br\/>More about RODER : <a href=\"https:\/\/roder.it\/en\/contacts\/\">about us<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The information contained in this website is provided for information purposes only. Although it has been prepared with the greatest care, it does not constitute a contractual offer or a binding commitment to supply. It may contain transcription, translation or typographical errors. For precise and up-to-date information, please contact our company directly.   <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Note:<\/strong> Some images on this website have been intentionally generated using artificial intelligence (AI). This is because, for many applications and projects, photographs of the actual installation or system cannot be disclosed owing to confidentiality agreements, contractual clauses and non-disclosure agreements (NDAs). <\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>RODER \u00b7 Inspection \u00b7 Dimensions and geometry Length and width The dimension and the geometry are among the fundamental quantities in industrial quality control. Measuring them correctly means ensuring that a product complies with tolerances, conforms to specifications and maintains consistent performance. In this section, devoted to Inspection, we examine the physical quantity itself and [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":19241,"parent":17990,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"dimensional and geometric measurements","_yoast_wpseo_title":"Dimension and geometry: industrial measurements | RODER","_yoast_wpseo_metadesc":"Guide to dimensional and geometric measurements: length, width, thickness, diameter, distance, 3D measurement and calibration. 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