Lab Certified Test Block Kit (3 Test Blocks), Shore D Scale
The Phase II Plus PHT975-20C is a Shore D durometer lab-certified test block kit that consists of three color-coded shore test blocks that range from Shore HD 30s to Shore HD 90s. The test blocks are designed for periodic verification of durometer calibration accuracy. The PHT975-20C test block kit is for use with all Shore D durometers. One durometer lab certificate is included for each test block. Shore Test Blocks are not Traceable to NIST or any other standard organization.