Mason's wet and dry bulb hygrometer

Made:: 1850 in London

maker:: Henry Barrow and Company, Henry Barrow & Co.

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Mason's wet and dry bulb hygrometer, made by Henry Barrow & Co., London in 1850, certified as free from error by James Glaisher 1850 March 28, in case

Details

Category:: Meteorology

Object Number:: 1995-935

Materials:: glass, brass, leather and paper

Measurements:: case: 1.7 x 27.2 x 6.4 cm

type:: hygrometer

credit:: Meteorological Office, Berkshire

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