KING Tester offers a large range of Brinell metal hardness test blocks that meet or exceed ASTM E-10 standards. The patented KING Tester design improves test accuracy and provides the most economical and reliable daily verification for Brinell testers. Two sizes of test blocks are available 2”x 6” and 4”x 4”. Made in USA ACCURATE • Our precision grid design improves test accuracy, visibility and reporting • Laser etched markings over the entire grid with spacing that fully complies to ASTM E-10, 7.7: Indentation Spacing • The patented, etched alphanumeric grid on the 4”x 4” block makes daily verification recording exceptionally easy • Every block is individually serialized and traceable • ISO-17025 certified • Meets ASTM E-10 standards • Available for HB 30, HB 15, HB 10 and HB 5