Hardness Calibration Test Blocks
Made in USA
Rockwell Scale, Steel, Hardness Calibration Test Blocks
Features:
- Used to determine the accuracy of hardness testers
- Large test blocks: Manufactured and certified to ASTM standards; supplied with a certificate of accuracy
- Standard test blocks: 2" Dia. X 0.3125" thick
- Large test blocks: 2.375" Dia. X 0.370" thick
- Each block is supplied in a fitted case
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