标准号:IS 7097-1973
发布日期:1974/2/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard prescribes the method for calibration of blocks for indirect verification of Knoop hardness testing machines.1.1.1 This standard does not apply to the calibration of test blocks used in the routine checking of testing machines.