This part of ISO 6507 specifies a method for the calibration of reference blocks to be used for the indirect verification of Vickers hardness testing machines, as specified in ISO 6507-2.
EN ISO 6507-3:2005 history
2018EN ISO 6507-3:2018 Metallic materials - Vickers hardness test - Part 3: Calibration of reference blocks
2005EN ISO 6507-3:2005 Metallic materials - Vickers hardness test - Part 3: Calibration of reference blocks (ISO 6507-3:2005)
1997EN ISO 6507-3:1997 Metallic Materials - Vickers Hardness Test - Part 3: Calibration of Reference Blocks (Incorporating Corrigendum October 1998)