The TH501 Rockwell hardness tester adopts the Rockwell (ROCKWELL) measurement principle, which can directly measure the Rockwell hardness, simple operation, stable indication, and easy maintenance. It is suitable for the Rockwell hardness testing of hard alloy, carbon steel, alloy steel, cast iron and non-ferrous metals, and can be widely used in the measurement, mechanical manufacturing, metallurgy, building materials and other industries.