[80-88 HRA Test Block]
[35-55 HRC Test Block]
[20-30 HRC Test Block]
HHIP 35-55HRC Rockwell Standard Test Block Hardness tester accessory. Can be used with our 8902-0150 hardness tester and most other imported hardness testers. Each block is marked with the specific measured value. Supplied with a calibration certificate from the factory.