Fix Rockwell test head to the surface of iron and steel parts to test the hardness by applying magnetic force. Follow Rockwell hardness test method completely and the test condition complies with standard of ISO 6508 and ASTM E 18. The magnetic Rockwell hardness tester is mainly applied in on-site quick test body hardness of steel parts. Test hardness of steel plate, pipe, axis, mould, huge forgings and huge and medium-size heat treatment parts if surface available. Test hardness of weld joint in boiler, pressure vessels, and pressure pipes. Replace low accurate and unreliable Leeb hardness testers.