{"id":18234,"date":"2026-06-26T10:38:15","date_gmt":"2026-06-26T08:38:15","guid":{"rendered":"https:\/\/roder.it\/products\/diacheck-ctfr-series-railway-wheel-gauges\/"},"modified":"2026-09-20T11:36:26","modified_gmt":"2026-09-20T09:36:26","slug":"diacheck-ctfr-series-railway-wheel-gauges","status":"publish","type":"page","link":"https:\/\/roder.it\/en\/products\/diacheck-ctfr-series-railway-wheel-gauges\/","title":{"rendered":"DIACHECK-CTFR series railway wheel gauges"},"content":{"rendered":"\n<style>.roder-spec thead th,.roder-spec thead td{background:#e8edf1 !important;font-weight:700;border-bottom:2px solid #c3cfd7 !important;}.roder-spec tbody tr:nth-child(2n) td{background-color:#f2f6f8 !important;}.roder-spec tbody tr:nth-child(2n+1) td{background-color:#ffffff !important;}<\/style>\n\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-is-layout-d5ff150a 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:58%\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#225f78;font-size:13px;font-weight:700;letter-spacing:2px;text-transform:uppercase\">RODER \u00b7 DIACHECK-CTFR railway wheel gauges<\/p>\n\n\n\n<h1 class=\"wp-block-heading has-text-color\" style=\"color:#17303f;font-size:clamp(23.043px, 1.44rem + ((1vw - 3.2px) * 1.918), 38px);font-weight:700;line-height:1.18\">DIACHECK-CTFR railway wheel gauges<\/h1>\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\/07\/roder-diacheck_ctfr-modello_standard_montaggio_su_ruota_vista_anteriore-web_image-1200x1200-1.webp\" alt=\"DIACHECK-CTFR railway wheel gauges\" style=\"border-radius:12px;width:260px\"\/><\/figure>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4a5b66;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.385), 17px);line-height:1.6\">RODER <strong>DIACHECK-CTFR gauges<\/strong> measure the <strong>diameter of railway wheels<\/strong> directly on the vehicle, with no dismantling, using a three-point contact method and a digital indicator. They attach to the wheel with permanent magnets and give fast, repeatable readings, with 0.1 mm resolution (programmable down to 0.01 mm) and IP42 protection. The series comprises three models \u2013 <strong>Compact<\/strong>, <strong>Standard<\/strong> and <strong>Extended<\/strong> \u2013 covering different diameter ranges, each also available in a <strong>Bluetooth<\/strong> version for measurement traceability. Used in railway workshops and depots for the preventive maintenance of locomotives, carriages and wagons.   <\/p>\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:42%\">\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-68199f40 wp-block-group-is-layout-constrained\" style=\"background-color:#eef3f6;border-radius:14px;padding-top:22px;padding-right:24px;padding-bottom:22px;padding-left:24px\">\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<ul class=\"wp-block-list is-style-checkbox has-ti-accent-color has-text-color has-link-color wp-elements-1\">\n<li><a href=\"#come-scegliere\">How to choose<\/a><\/li>\n\n\n\n<li><a href=\"#confronto\">Model comparison<\/a><\/li>\n\n\n\n<li><a href=\"#modelli\">The models<\/a><\/li>\n\n\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h2 id=\"come-scegliere\" class=\"wp-block-heading has-ti-accent-color has-text-color\">How to choose the railway wheel gauge<\/h2>\n\n<ul class=\"wp-block-list is-style-checkbox has-ti-accent-color has-text-color has-link-color wp-elements-2\">\n<li><strong>Diameter measuring range<\/strong>: Compact 300\u2013950 mm, Standard 320\u20131000 mm, Extended 910\u20131400 mm \u2013 choose according to the diameters of the wheels to be checked.<\/li>\n\n\n\n<li><strong>Data transmission<\/strong>: the -BT version adds Bluetooth and the Android\/iOS app for recording measurements and ensuring their traceability.<\/li>\n\n\n\n<li><strong>Common method<\/strong>: three-point contact, digital indicator, magnetic attachment and IP42 protection on all models.<\/li>\n\n\n\n<li><strong>Calibration<\/strong>: calibrators with nominal diameters from 860 to 940 mm, complete with measurement certificate.<\/li>\n\n\n<\/ul>\n\n<h2 id=\"confronto\" class=\"wp-block-heading has-ti-accent-color has-text-color\">Model comparison<\/h2>\n\n<figure class=\"wp-block-table alignwide is-style-stripes roder-spec\"><table><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Model<\/th><th class=\"has-text-align-left\" data-align=\"left\">Measuring range<\/th><th class=\"has-text-align-left\" data-align=\"left\">Resolution<\/th><th class=\"has-text-align-left\" data-align=\"left\">Attachment<\/th><th class=\"has-text-align-left\" data-align=\"left\">Bluetooth<\/th><th class=\"has-text-align-left\" data-align=\"left\">Part numbers (base \/ -BT)<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Compact<\/td><td class=\"has-text-align-left\" data-align=\"left\">300\u2013950 mm<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.1 mm (down to 0.01)<\/td><td class=\"has-text-align-left\" data-align=\"left\">magnets<\/td><td class=\"has-text-align-left\" data-align=\"left\">optional<\/td><td class=\"has-text-align-left\" data-align=\"left\">10-15-22 \/ 10-15-23<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Standard<\/td><td class=\"has-text-align-left\" data-align=\"left\">320\u20131000 mm<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.1 mm (down to 0.01)<\/td><td class=\"has-text-align-left\" data-align=\"left\">magnets<\/td><td class=\"has-text-align-left\" data-align=\"left\">optional<\/td><td class=\"has-text-align-left\" data-align=\"left\">10-15-20 \/ 10-15-21<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Extended<\/td><td class=\"has-text-align-left\" data-align=\"left\">910\u20131400 mm<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.1 mm (down to 0.01)<\/td><td class=\"has-text-align-left\" data-align=\"left\">magnets<\/td><td class=\"has-text-align-left\" data-align=\"left\">optional<\/td><td class=\"has-text-align-left\" data-align=\"left\">10-15-24 \/ 10-15-25<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 id=\"modelli\" class=\"wp-block-heading has-ti-accent-color has-text-color\">The DIACHECK-CTFR models<\/h2>\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-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\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctft-compact\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/roder-diacheck_ctfr-modello_compact_vista_anteriore-web_image-1200x1200-1.webp\" alt=\"DIACHECK-CTFR Compact\" 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\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctft-compact\/\">DIACHECK-CTFR Compact<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">Measuring range 300\u2013950 mm; the most compact model in the series.<\/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\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctft-compact\/\" style=\"font-size:14px\">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\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctfr-standard\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/roder-diacheck_ctfr-modello_standard_vista_anteriore_inferiore-web_image-1200x1200-1.webp\" alt=\"DIACHECK-CTFR Standard\" 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\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctfr-standard\/\">DIACHECK-CTFR Standard<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">Measuring range 320\u20131000 mm; the versatile model for most wheels.<\/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\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctfr-standard\/\" style=\"font-size:14px\">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\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctfr-extended\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/07\/roder-diacheck_ctfr-modello_extended_vista_frontale_sotto-web_image-1200x1200-1.webp\" alt=\"DIACHECK-CTFR Extended\" 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\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctfr-extended\/\">DIACHECK-CTFR Extended<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">Measuring range 910\u20131400 mm; for large-diameter wheels.<\/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\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctfr-extended\/\" style=\"font-size:14px\">Discover<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<h2 id=\"approfondimento\" class=\"wp-block-heading has-ti-accent-color has-text-color\">Gauges for measuring the diameter of railway wheels<\/h2>\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/roder.it\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctft-compact\/\">Compact<\/a>, <a href=\"https:\/\/roder.it\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctfr-standard\/\">Standard<\/a> and <a href=\"https:\/\/roder.it\/prodotti\/calibri-per-ruote-ferroviarie-serie-diacheck-ctfr\/calibri-diacheck-ctfr-extended\/\">Extended<\/a> models cover the entire range of railway wheel diameters, from the maintenance of carriages and wagons through to large-diameter wheels. Measuring directly on the vehicle, with no dismantling, shortens inspection times and supports preventive maintenance programs. <\/p>\n\n<p class=\"wp-block-paragraph\">All the models use a three-point contact method with a digital indicator and magnetic attachment, ensuring repeatable readings that meet the dimensional tolerances required by railway safety standards. The Bluetooth version allows traceability and integration into digital workflows. <\/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-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>RODER \u00b7 DIACHECK-CTFR railway wheel gauges DIACHECK-CTFR railway wheel gauges RODER DIACHECK-CTFR gauges measure the diameter of railway wheels directly on the vehicle, with no dismantling, using a three-point contact method and a digital indicator. They attach to the wheel with permanent magnets and give fast, repeatable readings, with 0.1 mm resolution (programmable down to [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":18235,"parent":17527,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"footnotes":""},"class_list":["post-18234","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>DIACHECK-CTFR series railway wheel gauges - RODER SRL<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/roder.it\/en\/products\/diacheck-ctfr-series-railway-wheel-gauges\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DIACHECK-CTFR series railway wheel gauges - RODER SRL\" \/>\n<meta property=\"og:description\" content=\"RODER \u00b7 DIACHECK-CTFR railway wheel gauges DIACHECK-CTFR railway wheel gauges RODER DIACHECK-CTFR gauges measure the diameter of railway wheels directly on the vehicle, with no dismantling, using a three-point contact method and a digital indicator. They attach to the wheel with permanent magnets and give fast, repeatable readings, with 0.1 mm resolution (programmable down to [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/roder.it\/en\/products\/diacheck-ctfr-series-railway-wheel-gauges\/\" \/>\n<meta property=\"og:site_name\" content=\"RODER SRL\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-20T09:36:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/roder.it\/wp-content\/uploads\/2025\/05\/diacheck_ctfr_misura_diametro_ruote_ferroviarie_strumento_1600x1600.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"1600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/roder.it\\\/en\\\/products\\\/diacheck-ctfr-series-railway-wheel-gauges\\\/\",\"url\":\"https:\\\/\\\/roder.it\\\/en\\\/products\\\/diacheck-ctfr-series-railway-wheel-gauges\\\/\",\"name\":\"DIACHECK-CTFR series railway wheel gauges - 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