INSIZE HDT-B-HR45N2 Superficial Rockwell Hardness Test Block 32-61 HR45N

INSIZE's HDT-B-HR45N2 is a reference-grade superficial Rockwell hardness test block calibrated to 32-61 HR45N, sized at 60 mm diameter and 11 mm thick. A workshop uses a block like this to verify that a superficial Rockwell hardness tester is still reading correctly at that level, and INSIZE supplies it, as with the rest of the HDT-B series, with a manufacturer inspection certificate.