{"id":26021,"date":"2026-06-29T17:41:23","date_gmt":"2026-06-29T15:41:23","guid":{"rendered":"https:\/\/roder.it\/applications\/steel-and-metals\/drawing-line-speed\/"},"modified":"2026-10-05T16:53:40","modified_gmt":"2026-10-05T14:53:40","slug":"drawing-line-speed","status":"publish","type":"page","link":"https:\/\/roder.it\/en\/applications\/steel-and-metals\/drawing-line-speed\/","title":{"rendered":"Drawing line speed"},"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=\"300\" height=\"300\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_trafilato_metallico_barre_tubi-web_image-300x300-1.webp\" alt=\"ASTech optical velocimeter for speed measurement on drawn metal products, bars and tubes\" class=\"wp-image-14964\" 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_trafilato_metallico_barre_tubi-web_image-300x300-1.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_trafilato_metallico_barre_tubi-web_image-300x300-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_trafilato_metallico_barre_tubi-web_image-300x300-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/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>drawing lines<\/strong>, <strong>non-contact<\/strong> measurement of speed and length on wire rod, bars, tubes and wires ensures <strong>cut-to-length<\/strong> and reliable process control, even at <strong>high speed<\/strong>.<\/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 slippage or wear<\/li>\n\n\n\n<li><strong>High speed:<\/strong> up to 50 m\/s<\/li>\n\n\n\n<li><strong>High accuracy:<\/strong> uncertainty down to 0.025 %<\/li>\n\n\n\n<li><strong>Metal surfaces:<\/strong> even bright or lubricated<\/li>\n\n\n\n<li><strong>Cut-to-length:<\/strong> accurate and repeatable length<\/li>\n\n\n\n<li><strong>Red-hot materials:<\/strong> hot wire rod and bars<\/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\">In <strong>drawing lines<\/strong> for wire, bars and tubes, control of <strong>speed<\/strong> and <strong>length<\/strong> is essential for cut-to-length and for process regulation. <a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/\">ASTech optical velocimeters<\/a> measure without contact on drawn metal products, eliminating the slippage typical of measuring wheels. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Optical measurement maintains <strong>constant accuracy<\/strong> even at high speed and on bright or lubricated surfaces, and leaves no marks on the material. This page is part of the <a href=\"https:\/\/roder.it\/en\/applications\/steel-and-metals\/\">Steel and metals<\/a> section and presents the solutions for drawing lines. <\/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\">Measurement on wire rod, bars, tubes and wires<\/h2>\n\n<p class=\"wp-block-paragraph\">Drawn products have surfaces that are often bright or metallic, sometimes lubricated, and travel at high speeds. In these conditions measuring wheels slip and wear, while optical measurement remains stable. The <a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm500\/\">VLM500<\/a> measures up to <strong>50 m\/s<\/strong> with an uncertainty of less than <strong>0.025 %<\/strong> and, thanks to the automatic exposure adjustment, also handles the reflective surfaces of drawn products. As a result, length counting for cut-to-length is accurate and repeatable.   <\/p>\n\n<p class=\"wp-block-paragraph\">For lines running at lower speeds, or to directly replace a measuring wheel, the <a href=\"https:\/\/roder.it\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm60\/\">VLM60<\/a> is suitable: it measures down to 0 m\/s and is easy to integrate.<\/p>\n\n<h2 class=\"wp-block-heading\">Elongation control in drawing<\/h2>\n\n<p class=\"wp-block-paragraph\">In drawing, the material elongates as its cross-section is reduced. By measuring the entry and exit speed it is possible to determine the <strong>elongation<\/strong> and regulate the process, improving the dimensional consistency of the product. In addition, synchronisation between the different stages of the line, based on a reliable speed measurement, prevents excessive tension and wire breaks.  <\/p>\n\n<h2 class=\"wp-block-heading\">Cut-to-length and piece sizing<\/h2>\n\n<p class=\"wp-block-paragraph\">On bars and tubes, accurate on-the-fly length measurement enables <strong>cut-to-length<\/strong> and precise piece sizing, reducing scrap at the ends. For example, on a tube line, knowing exactly the length produced makes it possible to cut pieces to a constant nominal size and to document production. For this reason optical measurement is particularly appreciated on high-value long products.  <\/p>\n\n<h2 class=\"wp-block-heading\">Advantages for drawing lines<\/h2>\n\n<ul class=\"wp-block-list is-style-checkmark\">\n<li>Non-contact measurement on bright and lubricated metal surfaces<\/li>\n\n\n\n<li>Speed up to 50 m\/s and uncertainty &lt; 0.025 % (VLM500)<\/li>\n\n\n\n<li>Elongation control between entry and exit<\/li>\n\n\n\n<li>Accurate cut-to-length on bars, tubes and wires<\/li>\n\n\n\n<li>No wear and no slippage: reduced maintenance<\/li>\n<\/ul>\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\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\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\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\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm500\/\" style=\"font-size:14px\">Discover<\/a><\/div>\n<\/div>\n<\/div>\n\n\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\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\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\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\/strumenti\/velocimetri-encoder-ottici\/velocimetri-ottici-serie-vlm60\/\" style=\"font-size:14px\">Discover<\/a><\/div>\n<\/div>\n<\/div>\n\n\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\/en\/applications\/steel-and-metals\/speed-and-length-of-hot-strip\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_materiali_alta_temperatura-web_image-300x300-1.webp\" alt=\"Speed and length of hot strip\" 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);\">Speed and length of hot strip<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">Measurement on hot sheets and strips.<\/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\/applications\/steel-and-metals\/speed-and-length-of-hot-strip\/\" style=\"font-size:14px\">Discover<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\">Preventing breaks and line stoppages<\/h2>\n\n<p class=\"wp-block-paragraph\">In drawing, accurate control of the speed between the stages of the line is essential to prevent <strong>excessive tension<\/strong> and <strong>wire breaks<\/strong>. A wire break means a line stoppage, re-threading and loss of material: costly and frequent events if synchronisation is not precise. By measuring the actual speed of the material without contact, the control system can keep the ratios between the stages constant, reducing the stress on the wire and the resulting stoppages.  <\/p>\n\n<p class=\"wp-block-paragraph\">In addition, the absence of contact avoids marking or damaging delicate surfaces, an important aspect on thin wires, strands and coated products where even a small imprint can be a defect.<\/p>\n\n<h2 class=\"wp-block-heading\">Versatility across different products<\/h2>\n\n<p class=\"wp-block-paragraph\">Drawing lines often process products that differ greatly in diameter, material and finish. An optical velocimeter, thanks to the automatic adjustment of the optics, adapts to this variety without requiring wheels or coatings to be replaced at every production change. As a result, set-up times are reduced and the flexibility of the plant increases. In particular, the same measuring head can follow raw wire rod, bright wire and coated tubes while maintaining constant accuracy.   <\/p>\n\n<p class=\"wp-block-paragraph\">This versatility is valuable in plants oriented towards small and variable batches, where the speed of format change directly affects overall productivity.<\/p>\n\n<h2 class=\"wp-block-heading\">Recommended configuration<\/h2>\n\n<p class=\"wp-block-paragraph\">For fast drawing lines and for maximum accuracy the choice is the VLM500 with the spatial filter principle. For slower lines or for the direct replacement of a measuring wheel the VLM60 is recommended. The working distance, the mounting accessories and any protection are defined with RODER technical support according to the product and the geometry of the line, so as to guarantee maximum repeatability over time.  <\/p>\n\n<h2 class=\"wp-block-heading\">Application examples in drawing lines<\/h2>\n\n<p class=\"wp-block-paragraph\">Typical applications include measuring the wire speed at the exit of the drawing machine, checking the length before winding onto the reel and cutting bars and tubes to length in finishing lines. In all these cases non-contact measurement avoids marking the surfaces and maintains accuracy even on bright or lubricated products. For example, on a drawn tube line, precise length counting makes it possible to cut pieces to a constant nominal size and to document production for traceability.  <\/p>\n\n<p class=\"wp-block-paragraph\">In addition, in multi-wire drawing lines, the ability to monitor the speed of each line helps to identify any process anomalies quickly. Ultimately, optical measurement contributes both to product quality and to continuity of production, reducing stoppages due to breaks and adjustments. RODER technical support helps to define the most suitable configuration for each line, from the single wire to high-speed multi-wire plants. Finally, it should be remembered that, by reducing wear, slippage and maintenance stoppages, the optical solution lowers the total operating cost of the drawing line and increases its availability, with a generally rapid return on investment in high-volume production.   <\/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-trafila-1\"><strong class=\"schema-faq-question\">Does optical measurement work on bright metal surfaces?<\/strong> <p class=\"schema-faq-answer\">Yes. The automatic adjustment of exposure and brightness allows measurement on bright, lubricated or reflective drawn products, without any special preparation. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-trafila-2\"><strong class=\"schema-faq-question\">What accuracy is achieved on drawing lines?<\/strong> <p class=\"schema-faq-answer\">With the VLM500 the uncertainty is less than 0.025 % at the nominal distance, with speeds up to 50 m\/s.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-trafila-3\"><strong class=\"schema-faq-question\">Can I control the elongation of the material?<\/strong> <p class=\"schema-faq-answer\">Yes. By measuring the entry and exit speed, the elongation is determined and the process is regulated, improving dimensional consistency. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-trafila-4\"><strong class=\"schema-faq-question\">Is the measurement suitable for cutting bars and tubes to length?<\/strong> <p class=\"schema-faq-answer\">Yes. Length measurement by integration enables cut-to-length and accurate piece sizing, reducing scrap at the ends. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-trafila-5\"><strong class=\"schema-faq-question\">Can I replace an existing measuring wheel?<\/strong> <p class=\"schema-faq-answer\">Yes. The VLM60 is designed as a direct replacement for measuring wheels, with an encoder output compatible with existing systems. <\/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 drawing lines, non-contact measurement of speed and length on wire rod, bars, tubes and wires ensures cut-to-length and reliable process control, even at high speed. In drawing lines for wire, bars and tubes, control of speed and length is essential for cut-to-length and for process regulation. ASTech optical velocimeters measure without contact on drawn [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":26022,"parent":19861,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"drawing line speed measurement","_yoast_wpseo_title":"Speed and length measurement in drawing","_yoast_wpseo_metadesc":"Optical velocimeters for drawing lines: non-contact measurement of speed and length on wire rod, bars, tubes and wires. 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