This part of ISO 6508 specifies a method for the calibration of reference blocks to be used for the indirectverification of Rockwell hardness testing machines (scales A, B, C, D, E, F, G, H, K, N, T), as specified inISO 6508-2.
DS/EN ISO 6508-3:2006 history
2006DS/EN ISO 6508-3:2006 Metallic materials - Rockwell hardness test - Part 3: Calibration of reference blocks (scales A, B, C, D, E, F, G, H, K, N, T)