CV Instruments Hardness Test Blocks are precision reference standards designed for the verification and calibration of hardness testing machines. Supplied with official calibration certificates (UKAS, DKD, ASTM), these blocks ensure compliance with international standards. Essential for industrial Quality Management, they guarantee reliable, traceable, and accurate hardness measurements across all scales.
Yamamoto metal hardness test blocks serve as precision reference standards for verifying hardness testers. Manufactured with tight tolerances and minimal variation (as low as ±0.1 HRC in some ranges), they provide stable, traceable benchmarks across Rockwell, Vickers, and other scales.
