Used primarily for the indirect verification and daily verification of a Rockwell hardness tester, this test block compares the relative performance between two hardness testers by measuring the same blocks on both machines. Reliable and versatile, it can also compare the performance of two indenters.

Used primarily for the indirect verification and daily verification of a Rockwell hardness tester, this test block compares the relative performance between two hardness testers by measuring the same blocks on both machines. Reliable and versatile, it can also compare the performance of two indenters.