The Mitutoyo Hardmatic test block set includes three test blocks in incremental hardness factors for calibrating HH-300 Hardness Testers. The hardness testing blocks calibrate Durometers for testing materials such as rubber, neoprene, polyesters, PVC, leather, etc.
Includes Calibration Set (Shore D Scale) Test Block 20* DURO (Blue) Test Block 40* DURO (Gray) Test Block 80* DURO (Black