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Close up scene the surface roughness measuring machine.
Measurement

Evolving Roughness Standards: Understanding and Implementing ISO 21920

With ISO 21920 bringing a myriad of changes for metrology professionals, it is critical that all elements of the standard are understood for accurate measurements.
The Polytec Surface Metrology Team
July 26, 2025

ISO 21920 introduces many changes for quality inspectors, engineers, and metrology professionals, requiring understanding of all standard elements for accurate measurements. The sections in the article highlight key parts and their practical measurement applications.


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