The Digital Rockwell Hardness Tester uses the method of measuring the indentation depth, and the hardness value can be directly read from the indicator. Therefore, it is simple and convenient to operate, easy to master, and has high work efficiency. It is suitable for the inspection of batches of parts and components. In the Rockwell hardness test method, diamond indenters and steel ball indenters can be used, which can measure both harder and softer specimens, and has a wide range of applications. As a result, the Rockwell hardness tester is widely used in production and has become the main testing means for inspecting product quality and determining reasonable processing techniques. The Rockwell hardness tester is a commonly used testing instrument for hardness tests, teaching and scientific research work in manufacturing enterprises, universities and colleges, and scientific research institutions.