{"id":25896,"date":"2026-06-29T17:41:50","date_gmt":"2026-06-29T15:41:50","guid":{"rendered":"https:\/\/roder.it\/applications\/paper-printing-and-converting\/product-speed-and-length\/"},"modified":"2026-10-05T12:55:18","modified_gmt":"2026-10-05T10:55:18","slug":"product-speed-and-length","status":"publish","type":"page","link":"https:\/\/roder.it\/en\/applications\/paper-printing-and-converting\/product-speed-and-length\/","title":{"rendered":"Product speed and length"},"content":{"rendered":"\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-61d584a3 wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-ba02fbf7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:40%\">\n<figure class=\"wp-block-image size-full has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"530\" height=\"530\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_nastro_lamiera_alta_velocita-web_image-530x530-1.webp\" alt=\"Non-contact speed and length measurement of products in converting\" class=\"wp-image-14968\" style=\"border-width:1px;border-top-left-radius:20px;border-top-right-radius:20px;border-bottom-left-radius:20px;border-bottom-right-radius:20px\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_nastro_lamiera_alta_velocita-web_image-530x530-1.webp 530w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_nastro_lamiera_alta_velocita-web_image-530x530-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_nastro_lamiera_alta_velocita-web_image-530x530-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_nastro_lamiera_alta_velocita-web_image-530x530-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 530px) 100vw, 530px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<p class=\"has-text-color has-background wp-block-paragraph\" style=\"border-radius:0px 6px 6px 0px;border-left-color:var(--wp--preset--color--ti-accent);border-left-style:solid;border-left-width:5px;color:#1A5276;background-color:#ebf1f4;padding-top:14px;padding-right:16px;padding-bottom:14px;padding-left:16px;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.769), 20px);font-style:italic\">In <strong>converting<\/strong> and <strong>printing<\/strong>, <strong>non-contact<\/strong> measurement of speed and length governs <strong>cut-to-length<\/strong>, piece counting and roll length, with constant accuracy and repeatability.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list is-style-checkbox has-ti-accent-color has-text-color has-link-color wp-elements-1\">\n<li><strong>Non-contact measurement:<\/strong> no marks on the product<\/li>\n\n\n\n<li><strong>Cut-to-length:<\/strong> accurate roll length<\/li>\n\n\n\n<li><strong>Piece counting:<\/strong> reliable length and quantity<\/li>\n\n\n\n<li><strong>Delicate materials:<\/strong> films, webs and reels<\/li>\n\n\n\n<li><strong>No slippage:<\/strong> no measuring wheel<\/li>\n\n\n\n<li><strong>Constant repeatability:<\/strong> stable over time<\/li>\n\n\n\n<li><strong>Simple integration:<\/strong> encoder outputs and fieldbus<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>speed and length measurement of products<\/strong> in converting and printing is the heart of process control: cut-to-length, piece counting and roll length all depend on it. <a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/\">ASTech optical velocimeters and encoders<\/a> provide this measurement <strong>without contact<\/strong>, with accuracy and repeatability that remain constant over time. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This page belongs to the <a href=\"https:\/\/roder.it\/en\/applications\/paper-printing-and-converting\/\">Paper, printing and converting<\/a> section and describes how to accurately measure the length and speed of webs, films and reel products.<\/p>\n<\/div>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-cover is-light popmake-11245\" style=\"border-width:1px;border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-left-radius:10px;border-bottom-right-radius:10px;min-height:250px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"213\" class=\"wp-block-cover__image-background wp-image-14896 size-large\" alt=\"banner aiuto nella scelta dello strumento oppure della tecnologia\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-1024x213.png\" data-object-fit=\"cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-1024x213.png 1024w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-300x63.png 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-768x160.png 768w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#d3d6dc\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-a304f9a9 wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-right has-ti-fg-color has-text-color has-link-color wp-elements-2 wp-block-paragraph\" style=\"font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.726), 35px);\"><strong>Would you like help choosing the right product ?<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-right is-layout-flex wp-container-core-buttons-is-layout-b507c051 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/roder.it\/en\/contacts\/\">Click here !<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h2 class=\"wp-block-heading\">From speed to product length<\/h2>\n\n<p class=\"wp-block-paragraph\">The optical velocimeter measures the instantaneous speed of the material and, by integrating it over time, derives the <strong>length<\/strong> with high resolution. This data directly governs the cutting position and the piece count. Since the measurement is made without contact, there is no slippage: the length error is permanently reduced, to the benefit of product quality and material yield. As a result, scrap and disputes with customers decrease.   <\/p>\n\n<p class=\"wp-block-paragraph\">For fast lines the <a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm500\/\">VLM500<\/a> is used (up to 50 m\/s, uncertainty &lt; 0.025 %); for the direct replacement of measuring wheels and for low speeds the <a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm60\/\">VLM60<\/a> is ideal, accurate even at 0 m\/s.<\/p>\n\n<h2 class=\"wp-block-heading\">Piece counting and cut-to-length<\/h2>\n\n<p class=\"wp-block-paragraph\">In lines that produce bags, labels, sheets or cut lengths, piece counting and cutting length must be accurate and repeatable. An optical measurement with a fast update time makes it possible to trigger the cutter at the exact instant, keeping the length constant even when the line speed varies. For example, in label production, the accuracy of the length determines the correct die-cutting position.  <\/p>\n\n<h2 class=\"wp-block-heading\">Advantages for web products<\/h2>\n\n<ul class=\"wp-block-list is-style-checkmark\">\n<li>Accurate metre counting and length for rolls and products<\/li>\n<li>Accurate cut-to-length on bags, labels and sheets<\/li>\n<li>Non-contact measurement: no marks on the products<\/li>\n<li>Stable tolerance over time, without frequent recalibrations<\/li>\n<li>Integration with existing cutters, rewinders and counters<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Registration and synchronisation<\/h2>\n\n<p class=\"wp-block-paragraph\">A stable speed measurement contributes to <strong>registration<\/strong> in printing presses and to the synchronisation of the units in converting lines. Keeping the ratios between the different stages constant reduces material waste and improves product quality. In addition, the availability of the data in real time facilitates automatic line adjustment, reducing manual intervention by the operator.  <\/p>\n\n<p class=\"wp-block-paragraph\">Since the signal is digital and drift-free, integration with supervision and labelling systems is simple and direct.<\/p>\n\n<h2 class=\"wp-block-heading\">Reliability and return on investment<\/h2>\n\n<p class=\"wp-block-paragraph\">The absence of contacting parts eliminates the wear and periodic maintenance typical of measuring wheels. As a result, the line runs with greater continuity and the measurement maintains the same accuracy over time. Ultimately, especially in high-volume production, the return on investment is rapid: less scrap, fewer stoppages and more consistent product quality. RODER technical support assists the customer in choosing the model and during installation.   <\/p>\n\n<h2 class=\"wp-block-heading\">Recommended products<\/h2>\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\n<h2 class=\"wp-block-heading\">Use cases in converting and printing<\/h2>\n\n<p class=\"wp-block-paragraph\">Speed and length measurement of products is used in many processes: rewinding with rolls cut to nominal length, production of bags and carrier bags to size, printing and die-cutting of labels, sheet cutting and lamination of laminates. In each case the same quantity, measured without contact, governs cutting and counting, ensuring the dimensional consistency of the finished product and the correct numbering of the pieces. <\/p>\n\n<p class=\"wp-block-paragraph\">For example, in the production of self-adhesive labels, the accuracy of the length determines the die-cutting position and the number of labels per roll; an error of a few millimetres, repeated over thousands of pieces, results in scrap and disputes. Optical measurement eliminates this source of error at the root. <\/p>\n\n<h2 class=\"wp-block-heading\">Length data and traceability<\/h2>\n\n<p class=\"wp-block-paragraph\">In addition to governing the cut, the length data feeds production documentation and traceability. Knowing exactly how many metres have been produced on each roll facilitates order management, automatic labelling and reporting to the customer. Since the signal is stable and drift-free, integration with management and MES systems is simple, with no need for the compensation for wear typical of contact measurements.  <\/p>\n\n<h2 class=\"wp-block-heading\">Managing format changes<\/h2>\n\n<p class=\"wp-block-paragraph\">Lines that produce bags, labels or sheets face frequent format changes. With a measuring wheel, each change may require checks and recalibrations; with optical measurement, on the other hand, switching from one format to another does not affect accuracy, because the measured quantity is the same regardless of the product. As a result, set-up times are reduced and the line quickly returns to full speed, an important advantage for small-batch production.  <\/p>\n\n<h2 class=\"wp-block-heading\">Accuracy and repeatability over time<\/h2>\n\n<p class=\"wp-block-paragraph\">The difference between a good and a bad length measurement is not seen on a single piece, but on the thousands of pieces in an order. A small systematic error, multiplied, becomes significant scrap. Optical measurement, free from slippage and wear, maintains a stable tolerance throughout production, without drift. For this reason it guarantees consistent quality even on long runs.   <\/p>\n\n<h2 class=\"wp-block-heading\">Data shared with several systems<\/h2>\n\n<p class=\"wp-block-paragraph\">The speed and length signal can be distributed simultaneously to several recipients: the cutter control, the line counter and the management system. Thanks to the encoder, analogue and fieldbus outputs, the same data feeds both the control functions and the production documentation, avoiding duplicated sensors and simplifying the line architecture. <\/p>\n\n<h2 class=\"wp-block-heading\">Frequently asked questions<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-prod-1\"><strong class=\"schema-faq-question\">How is the length of a web product measured?<\/strong> <p class=\"schema-faq-answer\">The optical velocimeter measures the instantaneous speed and integrates it over time to obtain the length, without contact and without slippage.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-prod-2\"><strong class=\"schema-faq-question\">Is the measurement suitable for bags and labels?<\/strong> <p class=\"schema-faq-answer\">Yes. Accurate length measurement governs cut-to-length and die-cutting, keeping the size of the products constant. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-prod-3\"><strong class=\"schema-faq-question\">Is there a risk of marking the material?<\/strong> <p class=\"schema-faq-answer\">No. Being non-contact, the measurement leaves no marks and does not deform films and delicate products. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-prod-4\"><strong class=\"schema-faq-question\">Which model should I choose?<\/strong> <p class=\"schema-faq-answer\">The VLM500 for high speeds and maximum accuracy; the VLM60 to replace measuring wheels and to measure even at zero speed.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-prod-5\"><strong class=\"schema-faq-question\">Can I integrate it with the existing cutter?<\/strong> <p class=\"schema-faq-answer\">Yes. The incremental encoder output is compatible with counters, cutters and rewinders already installed. <\/p> <\/div> <\/div>\n\n<h2 id=\"prodotti-collegati\" class=\"wp-block-heading has-ti-accent-color has-text-color\">Related products<\/h2>\n\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<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\/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 speed meters and encoders\" 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 speed meters and encoders<\/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<\/div>\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-3\">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=\"http:\/\/www.rodervision.com\">www.rodervision.com<\/a><br\/>RODER Instruments Division : <a href=\"http:\/\/www.rodervision.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>In converting and printing, non-contact measurement of speed and length governs cut-to-length, piece counting and roll length, with constant accuracy and repeatability. The speed and length measurement of products in converting and printing is the heart of process control: cut-to-length, piece counting and roll length all depend on it. ASTech optical velocimeters and encoders provide [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":25897,"parent":19877,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"product length measurement","_yoast_wpseo_title":"Speed and length measurement of products","_yoast_wpseo_metadesc":"Optical measurement of speed and length of webs, films and reel products: accurate piece counting and cut-to-length, without contact. 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