King Tester is an industry leader in portable Brinell hardness testers, Rockwell testers, test blocks and microscopes. All King Portable Brinell Testers are made in the USA. KING Tester received the ISO 17025 accreditation from the American Association for Laboratory Accreditation (A2LA). All King Tester products are certified and calibrated per ASTM E10 standards. King Tester has been manufacturing high quality and ruggedly designed portable Brinell Testers and related equipment since 1936. (less)