DIN EN ISO 16859-3:2016 Metallic materials - Leeb hardness test - Part 3: Calibration of reference test blocks (ISO 16859-3:2015); German version EN ISO 16859-3:2015 has been changed from DIN 50156-3:2007 Metallic materials - Leeb hardness test - Part 3: Calibration of reference blocks.
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