ISO 21920-2 is Part 2 of the ISO 21920 series on surface texture by profile methods within geometrical product specifications (GPS). It specifies the terms, definitions and parameters for determining surface texture by profile methods.
Inspection and metrology labs use it to confirm what a profile parameter on a drawing means and how it is defined. ISO notes that an annex describes the main changes from previous ISO profile documents, which matters when older drawings or reports use earlier definitions. Other annexes give an overview of profile and areal standards in the GPS matrix model and the place of this document in it. The current edition is 2021, with a corrected English version issued in 2022.
Profile parameters are measured with a profile instrument such as a stylus roughness tester. Our surface roughness testers are used for profile surface texture measurement to ISO 21920-2. If you need help matching ISO 21920-2 requirements to your parts or setup, contact our team.
