This standard defines the classification, basic parameters, requirements, test methods and inspection rules of mechanical balance. It applies to mechanical balance using the lever principle for measurement of mass, but does not include special types such as vacuum Balance, hot weather, etc. The standard details the classification of Balance (such as double disc and single disc Balance), basic parameters (such as actual scale interval and verification scale interval), and provides corresponding signs, Encasement, transportation and storage requirements to ensure the accuracy and Reliability of Balance in use.