HRB 3-Block Master Calibration Kit
MSTR CAL KIT HRB 3 BLOCK
No facility with a hardness tester in use should be without a calibration kit
These kits come with calibrated test blocks and the serialized penetrator that was used to inspect each of the blocks in the set
When a discrepancy is detected in a tester, these kits allow you to determine the direction to proceed to resolve the issue.