... indenter 2.manual and automatic test 3.OEM/ODM hardness tester diamond tool diamond indenter YIYAN hardness indenter 'YIYAN' ... metals. 1. Widely used in measuring department's standard hardness tester, measuring materials have quenching, surface harden steel, steel, ... choosing, should according to the spindle structure used hardness tester, special attention to various models of pressure head shape ...