手动表面洛氏硬度计是一种普及型的，专门用于测试金属材料表面硬度的洛氏硬度计。本机采用机械式手动加载操作，无电器装置。具有操作简便，压痕微小，精度高等特点。适用范围表面淬火钢，铜、铝合金薄板，带钢硬质合金钢，镀锌，镀铬，镀锡，材料表面热处理和化学表面处理的各种金属材料。HR-45M Manual Superficial Rockwell Hardness Tester adopts mechanical and manual testing method without electrical device. With simple appearance it uses as popular type Rockwell Hardness testing instrument. Usage Range:Surface hardened steel copper aluminum alloy sheet hard alloy steel zinc layers chrome layers tin layers surface heat treating and chemical treating materials etc.技术数据（Technical Specifications）