Regnault type hygrometer with mercury thermometer

Made:: 1866 in London

Regnault's hygrometer (psychrometer) by Negretti and Zambra, 1 Hatton Garden, London, also marked 2279-I-1866, in fitted wooden case with pair of mercury-in-glass thermometers fitted with brass collars

Details

Category:: Meteorology

Object Number:: 1987-1174

type:: psychrometer and mercury thermometer

credit:: Christie's South Kensington Limited

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Parts

Pair of Mercury thermometer for hygrometer, British, 1866

Pair of mercury-in-glass thermometers fitted with brass collars, part of a Regnault's hygrometer, by Negretti and Zambra, 1 Hatton Garden, 122 Regent St, 59 Cornhill and 153 Fleet St. London, serial no. (2279) D and (2279) W, ranges -8 to 170 degrees Fahrenheit