This standard specifies the terms and definitions, classification and naming, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage, and quality commitment of liquid expansion pressure thermometers. This standard is applicable to liquid expansion pressure thermometers (hereinafter referred to as thermometers) whose normal working environment temperature is -20℃~65℃, relative humidity is 5%~95%, and the minimum graduation value is ≤2℃.