BS 1900:1976

This standard BS 1900:1976 Specification for secondary reference thermometers is classified in these ICS categories:

• 17.200.20 Temperature-measuring instruments

This British Standard specifies a comprehensive series of secondary reference (SR) thermometers for calibrating other thermometers in laboratory and industrial use.

Series of 29 total immersion thermometers for checking the accuracy of other thermometers in the range -80°C to 505°C. Materials, essential dimensions, graduation and figuring. Appendices: thermometric glasses approved by the NPL; annealing and stabilization; test procedure; values for uncertainty of test.