DIN EN ISO 4545-3:2018-07 Metallic materials - Knoop hardness test - Part 3: Calibration of reference blocks (ISO 4545-3:2017); German version EN ISO 4545-3:2018
2018DIN EN ISO 4545-3:2018-07 Metallic materials - Knoop hardness test - Part 3: Calibration of reference blocks (ISO 4545-3:2017); German version EN ISO 4545-3:2018
2018DIN EN ISO 4545-3:2018 Metallic materials - Knoop hardness test - Part 3: Calibration of reference blocks (ISO 4545-3:2017)
2006DIN EN ISO 4545-3:2006 Metallic materials - Knoop hardness test - Part 3: Calibration of reference blocks (ISO 4545-3:2005); English version of DIN EN ISO 4545-3:2006-03