ISO 656:1980 Preview
Short enclosed-scale thermometers for precision use
This standard was last reviewed and confirmed* in 2010.
*Therefore this version remains current
A series of liquid-in glass enclosed-scale thermometer, not exceeding 250 mm in length for accurate measurement of temperature is specified. The combination of letters and figures allocated to each thermometer of the series indicating the type is given. Temperature scale, materials, construction, marking and accuracy are specified. The annex deals with a method of determing change in the zero indication.