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