{"id":28744,"date":"2019-03-04T22:22:17","date_gmt":"2019-03-04T22:22:17","guid":{"rendered":"https:\/\/www.novacam.com\/?p=28744"},"modified":"2019-06-03T16:11:56","modified_gmt":"2019-06-03T16:11:56","slug":"how-to-measure-axial-straightness-of-bore-tube-barrel-ids","status":"publish","type":"post","link":"https:\/\/www.novacam.com\/fr\/2019\/03\/04\/how-to-measure-axial-straightness-of-bore-tube-barrel-ids\/","title":{"rendered":"How to measure axial straightness of bore, tube, or barrel IDs"},"content":{"rendered":"<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5hm55l4-e47250da96c748d6bd30c73c9b22d534\">\n.flex_column.av-5hm55l4-e47250da96c748d6bd30c73c9b22d534{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-5hm55l4-e47250da96c748d6bd30c73c9b22d534 av_one_full  avia-builder-el-0  el_before_av_hr  avia-builder-el-first  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-jsuq8zay-99382f4b8ead3c5e2bd754afa50d5c6d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h1><strong>How to measure axial straightness of bore, tube, and barrel IDs<\/strong><\/h1>\n<p>Published on March 4, 2019<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jsurditu-8d4df2cdd482c957def270db0d173208\">\n#top .hr.hr-invisible.av-jsurditu-8d4df2cdd482c957def270db0d173208{\nheight:10px;\n}\n<\/style>\n<div  class='hr av-jsurditu-8d4df2cdd482c957def270db0d173208 hr-invisible  avia-builder-el-2  el_after_av_one_full  el_before_av_one_full'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4nzpitk-d4aae6eab934fa112e42b0b48118c54e\">\n.flex_column.av-4nzpitk-d4aae6eab934fa112e42b0b48118c54e{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-4nzpitk-d4aae6eab934fa112e42b0b48118c54e av_one_full  avia-builder-el-3  el_after_av_hr  el_before_av_one_half  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-jsuqh8wk-2e25b0531de7854748d67a7ba4e37273'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Axial (or axis) straightness is a tolerance that controls how much a part&#8217;s axis is allowed to curve.<\/p>\n<p>Measuring axial straightness of bore, tube, and barrel IDs is often critical to ensuring proper component function. While \u00a0measurements in such tight spaces can be challenging for many instruments, Novacam 3D metrology systems obtain these measurements rapidly, in a non-contact automated manner, and with micron (and often sub-micron) precision.<\/p>\n<p>How is this done?<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-p41748-d8e78c638e7c47650fb00e2dd1a9e7c6\">\n.flex_column.av-p41748-d8e78c638e7c47650fb00e2dd1a9e7c6{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-p41748-d8e78c638e7c47650fb00e2dd1a9e7c6 av_one_half  avia-builder-el-5  el_after_av_one_full  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jsuqh8wk-2e25b0531de7854748d67a7ba4e37273'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>Small probes for narrow spaces<\/h2>\n<p>Novacam provides two 3D metrology systems for measuring inside diameters (IDs): the <a href=\"https:\/\/www.novacam.com\/fr\/products\/boreinspect-pour-la-metrologie-des-alesages-en-3d\/\">BoreInspect<\/a> et <a href=\"https:\/\/www.novacam.com\/fr\/products\/tubeinspect-pour-la-metrologie-de-lidentification-et-de-lodeur-des-tubes-en-3d\/\">TubeInspect<\/a>.\u00a0 Both systems use small-diameter side-looking optical probes that come in a range of sizes and lengths. (As of today, the thinnest probe, with 0.5 mm diameter, measures IDs as small as 1 mm.)<\/p>\n<p>To acquire surface measurements, the side-looking probe shines a beam of light at the ID surface and collects the signal reflected back from the surface.\u00a0 While the probe traces a predetermined path through the ID, measurements are done in a point-by-point manner at a rate of up to 100,000 3D points per second.\u00a0 The path may be linear, circular or spiral.<\/p>\n<p>For the fastest axial straightness measurement, the operator would request 3 distinct circular profiles of the ID.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-41ubobs-db64cd66b78dd7cb9f509033d6ae95f0\">\n.flex_column.av-41ubobs-db64cd66b78dd7cb9f509033d6ae95f0{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-41ubobs-db64cd66b78dd7cb9f509033d6ae95f0 av_one_half  avia-builder-el-7  el_after_av_one_half  el_before_av_one_full  flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jsuqh8wk-2e25b0531de7854748d67a7ba4e37273'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"attachment_5270\" style=\"width: 335px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.novacam.com\/wp-content\/uploads\/2018\/01\/Probe-entering-from-above.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5270\" class=\"wp-image-5270 size-full\" src=\"https:\/\/www.novacam.com\/wp-content\/uploads\/2018\/01\/Probe-entering-from-above.jpg\" alt=\"TubeInspect small-diameter probe about to enter a 5.6-mm diameter bore\" width=\"325\" height=\"306\" srcset=\"https:\/\/www.novacam.com\/wp-content\/uploads\/2018\/01\/Probe-entering-from-above.jpg 325w, https:\/\/www.novacam.com\/wp-content\/uploads\/2018\/01\/Probe-entering-from-above-140x132.jpg 140w, https:\/\/www.novacam.com\/wp-content\/uploads\/2018\/01\/Probe-entering-from-above-300x282.jpg 300w\" sizes=\"auto, (max-width: 325px) 100vw, 325px\" \/><\/a><p id=\"caption-attachment-5270\" class=\"wp-caption-text\">TubeInspect small-diameter probe about to enter a 5.6-mm diameter bore<\/p><\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3o546so-32ec4a4dd510e5d0f42e89b0710732a3\">\n.flex_column.av-3o546so-32ec4a4dd510e5d0f42e89b0710732a3{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-3o546so-32ec4a4dd510e5d0f42e89b0710732a3 av_one_full  avia-builder-el-9  el_after_av_one_half  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jsuqh8wk-2e25b0531de7854748d67a7ba4e37273'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>Axial straightness calculation<\/h2>\n<p>Axial straightness is a 3D tolerance. The axis being controlled must lie within the volume of a cylinder defined by the tolerances.<\/p>\n<p>From the 3D point cloud data generated by Novacam 3D metrology systems, the component axial straightness is calculated by\u00a0 geometrical dimensioning and tolerancing (GD&amp;T) software (typically PolyWorks Inspector<sup><small><small>TM<\/small><\/small><\/sup>software).<\/p>\n<p>The two images below show axial straightness measurements calculated from 1)\u00a0 3 circular profiles, which is the most time-efficient method, and 2) from a high-density spiral scan of the ID.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-35mh4qw-8772f4f9129abc998b54cb7c573e15a9\">\n.flex_column.av-35mh4qw-8772f4f9129abc998b54cb7c573e15a9{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-35mh4qw-8772f4f9129abc998b54cb7c573e15a9 av_one_half  avia-builder-el-11  el_after_av_one_full  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jsuqtp5i-28b967cba546410be254edab95e7ff84'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"attachment_28758\" style=\"width: 275px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.novacam.com\/wp-content\/uploads\/bore-ID-straightness-from-3-profiles-.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-28758\" class=\"wp-image-28758\" src=\"https:\/\/www.novacam.com\/wp-content\/uploads\/bore-ID-straightness-from-3-profiles--223x300.jpg\" alt=\"Bore ID straightness from 3 profiles\" width=\"265\" height=\"356\" srcset=\"https:\/\/www.novacam.com\/wp-content\/uploads\/bore-ID-straightness-from-3-profiles--223x300.jpg 223w, https:\/\/www.novacam.com\/wp-content\/uploads\/bore-ID-straightness-from-3-profiles--104x140.jpg 104w, https:\/\/www.novacam.com\/wp-content\/uploads\/bore-ID-straightness-from-3-profiles--450x605.jpg 450w, https:\/\/www.novacam.com\/wp-content\/uploads\/bore-ID-straightness-from-3-profiles-.jpg 522w\" sizes=\"auto, (max-width: 265px) 100vw, 265px\" \/><\/a><p id=\"caption-attachment-28758\" class=\"wp-caption-text\">Bore ID straightness from 3 profiles<\/p><\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2enjfew-f1c698d6eb90885bf694dbb36b5bfc4c\">\n.flex_column.av-2enjfew-f1c698d6eb90885bf694dbb36b5bfc4c{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-2enjfew-f1c698d6eb90885bf694dbb36b5bfc4c av_one_half  avia-builder-el-13  el_after_av_one_half  el_before_av_one_full  flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jsuqtp5i-28b967cba546410be254edab95e7ff84'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div class=\"mceTemp\"><\/div>\n<div id=\"attachment_29476\" style=\"width: 505px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.novacam.com\/wp-content\/uploads\/bore-ID-straightness-from-high-density-scan-1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-29476\" class=\"wp-image-29476 size-portfolio\" src=\"https:\/\/www.novacam.com\/wp-content\/uploads\/bore-ID-straightness-from-high-density-scan-1-495x400.jpg\" alt=\"Straightness deviation map generated from a high density scan.\" width=\"495\" height=\"400\" \/><\/a><p id=\"caption-attachment-29476\" class=\"wp-caption-text\">Straightness deviation map generated from a high density spiral scan.<\/p><\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-201ciyw-b5d025c1c6b6625207ddfe7537aabb0f\">\n.flex_column.av-201ciyw-b5d025c1c6b6625207ddfe7537aabb0f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-201ciyw-b5d025c1c6b6625207ddfe7537aabb0f av_one_full  avia-builder-el-15  el_after_av_one_half  el_before_av_one_full  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jsuqh8wk-2e25b0531de7854748d67a7ba4e37273'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>Precision of measurement<\/h2>\n<p>With Novacam ID measurement systems, the repeatability (standard deviation of type1 Gauge R&amp;R) of straightness measurements is typically better than 0.5 \u00b5m (0.00002\u201d). Here is an example:<\/p>\n<ul>\n<li>The TubeInspect was used to measure GD&amp;T straightness of two bores. The operator repeated the measurement 10 times for each bore and then used PolyWorks Inspector<sup><small><small>TM<\/small><\/small><\/sup> software for straightness calculation and reporting.\u00a0 Here are the results:<\/li>\n<\/ul>\n<div id=\"attachment_28759\" style=\"width: 517px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.novacam.com\/wp-content\/uploads\/Straightness_measurement_repeatability.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-28759\" class=\"wp-image-28759 size-full\" src=\"https:\/\/www.novacam.com\/wp-content\/uploads\/Straightness_measurement_repeatability.jpg\" alt=\"Repeatability (standard deviation of type1 Gauge R&amp;R) of axial straightness measurement \" width=\"507\" height=\"288\" srcset=\"https:\/\/www.novacam.com\/wp-content\/uploads\/Straightness_measurement_repeatability.jpg 507w, https:\/\/www.novacam.com\/wp-content\/uploads\/Straightness_measurement_repeatability-140x80.jpg 140w, https:\/\/www.novacam.com\/wp-content\/uploads\/Straightness_measurement_repeatability-300x170.jpg 300w, https:\/\/www.novacam.com\/wp-content\/uploads\/Straightness_measurement_repeatability-450x256.jpg 450w\" sizes=\"auto, (max-width: 507px) 100vw, 507px\" \/><\/a><p id=\"caption-attachment-28759\" class=\"wp-caption-text\">Repeatability (standard deviation of type1 Gauge R&amp;R) of axial straightness measurement<\/p><\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1lukr3c-89980bfce3c2d53fa4a45ca29cb7a780\">\n.flex_column.av-1lukr3c-89980bfce3c2d53fa4a45ca29cb7a780{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1lukr3c-89980bfce3c2d53fa4a45ca29cb7a780 av_one_full  avia-builder-el-17  el_after_av_one_full  el_before_av_two_third  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jsuqh8wk-2e25b0531de7854748d67a7ba4e37273'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>All measurements can be automated<\/h2>\n<p>Parts with tight GD&amp;T straightness tolerances include automotive or aerospace valves valves, shafts, hydraulic cylinders, medical tubes, zirconium tubes,\u00a0 safety valves, fuel rails, defense bores and barrels, and extruder dies.<\/p>\n<p>With both <a href=\"https:\/\/www.novacam.com\/fr\/products\/boreinspect-pour-la-metrologie-des-alesages-en-3d\/\">BoreInspect<\/a> et <a href=\"https:\/\/www.novacam.com\/fr\/products\/tubeinspect-pour-la-metrologie-de-lidentification-et-de-lodeur-des-tubes-en-3d\/\">TubeInspect<\/a>,\u00a0 users easily automate the entire process of ID scanning, straightness calculation, and the reporting, with go-no-go value assignment. The same goes for the measurement of other GD&amp;T parameters such as ID or OD roundness, concentricity, cylindricity, etc. But we will leave discussions of those parameters for another day.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-15tyfpk-58857ddf73785a529f8cbc3e547f83f6\">\n.flex_column.av-15tyfpk-58857ddf73785a529f8cbc3e547f83f6{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-15tyfpk-58857ddf73785a529f8cbc3e547f83f6 av_two_third  avia-builder-el-19  el_after_av_one_full  el_before_av_one_fourth  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jsuqh8wk-2e25b0531de7854748d67a7ba4e37273'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Do you need to measure GD&amp;T axial straightness inside (or outside) your component?<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3i3l8p-c05e2cae05f0b2f3157a3245207010de\">\n.flex_column.av-3i3l8p-c05e2cae05f0b2f3157a3245207010de{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-3i3l8p-c05e2cae05f0b2f3157a3245207010de av_one_fourth  avia-builder-el-21  el_after_av_two_third  el_before_av_hr  flex_column_div av-zero-column-padding  column-top-margin'     ><div  class='avia-button-wrap av-jkoi6qsv-1173e5cca7a987612e23820de3bc7f83-wrap avia-button-left  avia-builder-el-22  avia-builder-el-no-sibling'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jkoi6qsv-1173e5cca7a987612e23820de3bc7f83\">\n#top #wrap_all .avia-button.av-jkoi6qsv-1173e5cca7a987612e23820de3bc7f83{\nbackground-color:#ff9900;\nborder-color:#ff9900;\ncolor:#ffffff;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-jkoi6qsv-1173e5cca7a987612e23820de3bc7f83 .avia-svg-icon svg:first-child{\nfill:#ffffff;\nstroke:#ffffff;\n}\n<\/style>\n<a href='https:\/\/www.novacam.com\/fr\/nous-contacter-2\/nous-contacter\/'  class='avia-button av-jkoi6qsv-1173e5cca7a987612e23820de3bc7f83 av-link-btn avia-icon_select-no avia-size-x-large avia-position-left'   aria-label=\"Contactez nous !\"><span class='avia_iconbox_title' >Contactez nous !<\/span><\/a><\/div><\/div>\n<div  class='hr av-k5avbc-69d5a5fefccd5734f95350c78a8fefe2 hr-default  avia-builder-el-23  el_after_av_one_fourth  el_before_av_one_third'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18g1gr-2317caeca6d65831b42fbc80dedabc18\">\n.flex_column.av-18g1gr-2317caeca6d65831b42fbc80dedabc18{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-18g1gr-2317caeca6d65831b42fbc80dedabc18 av_one_third  avia-builder-el-24  el_after_av_hr  el_before_av_one_third  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-3ncs3-88d3ca74a5f3e908dbd331fe95d4bfa8'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-waioz-15129e036111ecc60b49fc74d64c8916\">\n.av_font_icon.av-waioz-15129e036111ecc60b49fc74d64c8916 .av-icon-char{\nfont-size:30px;\nline-height:30px;\n}\n<\/style>\n<span  class='av_font_icon av-waioz-15129e036111ecc60b49fc74d64c8916 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-iconfont avia-font-entypo-fontello av-no-color avia-icon-animate'><span class='av-icon-char' data-av_icon='\ue826' data-av_iconfont='entypo-fontello' aria-hidden=\"true\" ><\/span><\/span> See related product pages for:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.novacam.com\/fr\/products\/boreinspect\/\">BoreInspect<\/a><\/li>\n<li><a href=\"https:\/\/www.novacam.com\/fr\/products\/tubeinspect-pour-la-metrologie-de-lidentification-et-de-lodeur-des-tubes-en-3d\/\">TubeInspect<\/a><\/li>\n<\/ul>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-581bax-a70ce8bf1e865a5ad4168729550e5128\">\n.flex_column.av-581bax-a70ce8bf1e865a5ad4168729550e5128{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-581bax-a70ce8bf1e865a5ad4168729550e5128 av_one_third  avia-builder-el-27  el_after_av_one_third  el_before_av_one_third  flex_column_div av-zero-column-padding'     ><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-tix1n-8a7f8cc25c43c46e94cc3d44ce8407dd\">\n.flex_column.av-tix1n-8a7f8cc25c43c46e94cc3d44ce8407dd{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-tix1n-8a7f8cc25c43c46e94cc3d44ce8407dd av_one_third  avia-builder-el-28  el_after_av_one_third  avia-builder-el-last  flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-24dm3-ba103b6d78fffee9b20fa453d4e54625'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><a href=\"https:\/\/www.novacam.com\/fr\/entreprise\/nouvelles-et-evenements\/\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2lu3yx-d51a9b47a383446087af26e41f8404c8\">\n.av_font_icon.av-2lu3yx-d51a9b47a383446087af26e41f8404c8 .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-2lu3yx-d51a9b47a383446087af26e41f8404c8 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-iconfont avia-font-entypo-fontello av-no-color avia-icon-animate'><span class='av-icon-char' data-av_icon='\ue830' data-av_iconfont='entypo-fontello' aria-hidden=\"true\" ><\/span><\/span>Back to News &amp; Events list<\/a><\/p>\n<\/div><\/section><\/div>","protected":false},"excerpt":{"rendered":"<p>Many tubes, bores and barrels in high-precision industries must meet strict criteria for straightness. Read about Novacam&#8217;s solution for such applications.<\/p>","protected":false},"author":3,"featured_media":28758,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[27,4],"tags":[43,47,44,50,51,46,19,48,42,45,49],"class_list":["post-28744","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all","category-news","tag-axial-straightness","tag-barrels","tag-bores","tag-cylinders","tag-dies","tag-inside-diameters","tag-measurements","tag-shafts","tag-straightness","tag-tubes","tag-valves"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - 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