The JIS K7215-1986 standard specifies the hardness gauge hardness testing method of plastic materials, which is mainly applicable to the measurement of A-type and D-type hardness of plastics. The standard specifies the test range, definition of terms, adjustment of sample state, test temperature and humidity requirements, and the specific operation steps of hardness gauge. It is suitable for plastic materials other than Plastic film, tape and molded plastics, and can also be used for the measurement of resilience hardness. It is a commonly used test method in quality management.