4×4 Test Block The bigger test block allows you to pay less per indent Every block is individually serialized and traceable Available for all Brinell scales Meets ASTM E-10 standards Precision grid design improves test accuracy, visibility and reporting Automatically log and track your Daily Verifications with the King Tester patented Alphanumeric grid Laser etched markings over the entire grid with spacing that fully complies to ASTM E-10, 7.7: Indentation Spacing ISO-17025 certified
