BS 5248:1990

This British Standard specifies requirements for mercury-in-glass thermometers suitable for use in an electrically or mechanically aspirated wet and dry bulb hygrometer together with the essential construction and performance requirements for the frame.

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.

Celsius scale solid-stem, mercury-in-glass thermometers for electrically or clockwork driven aspirated hygrometers more accurate than the whirling hygrometers described in BS 2842. Essential details of remainder of instrument. Guidance on methods of use and errors in computed humidity.