HRA - ASTM E18 & EN ISO 6508

The Rockwell hardness reference blocks HRA are manufactured and calibrated by Euro Product in their own premises.  Each block is measured according to the highest levels of precision and comes with a certificate of factory according to ASTM E18 & EN ISO 6508. As an option, each block can be supplied with an official certificate UKAS and/or marked with a hexagonal grid ranging from 2 mm to 6 mm (pitch 0,5 mm) for easy test (please specify the size of the grid to the command).