{"id":61395,"date":"2026-05-14T12:41:39","date_gmt":"2026-05-14T12:41:39","guid":{"rendered":"https:\/\/www.alpametrology.com\/uncategorized\/roughness-sample-sets-for-visual-comparison-only-alpa\/"},"modified":"2026-05-21T21:37:12","modified_gmt":"2026-05-21T21:37:12","slug":"roughness-sample-sets-for-visual-comparison-only-alpa","status":"publish","type":"product","link":"https:\/\/www.alpametrology.com\/en\/rugosimeters-and-profilometers\/roughness-sample-sets-for-visual-comparison-only-alpa\/","title":{"rendered":"Roughness sample sets (for visual comparison only) ALPA"},"content":{"rendered":"<ul>\n<li>This set consists of 30 samples of metal surfaces produced by 6 different machining methods widely used in industry <\/li>\n<li> The label shows the Ra values of each sample according to both the metric and imperial system <\/li>\n<li> (Label for Rz available on request) <\/li>\n<li> Nominal values of samples &#8211; Ra \u00b5m 0.05 &#8211; 0.1 &#8211; 0.2 for lapping and boring &#8211; Ra \u00b5m 0.4 &#8211; 0.8 &#8211; 1.6 for grinding &#8211; Ra \u00b5m 0.4 &#8211; 0.8 &#8211; 1.6 &#8211; 3.2 &#8211; 6.3 &#8211; 12.5 for horizontal and vertical milling, turning<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>This set consists of 30 samples of metal surfaces produced by 6 different machining methods widely used in industry The label shows the Ra values of each sample according to both the metric and imperial system (Label for Rz available on request) Nominal values of samples &#8211; Ra \u00b5m 0.05 &#8211; 0.1 &#8211; 0.2 for&hellip;<\/p>\n","protected":false},"featured_media":32226,"template":"","meta":{"content-type":""},"product_cat":[62194],"product_tag":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Roughness sample sets (for visual comparison only) ALPA<\/title>\n<meta name=\"description\" content=\"Roughness sample set (for visual comparison only) ALPA. 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