Hair hygrometer

Description

Hair hygrometer, circular dial above brass cylinder with human hair as hygroscopic element, to measure atmospheric humidity, in shaped mahogany case, by Haas and Hurter of London, c. 1790

Museum reference

T.1967.14

Collection

History of Science

Object name

Hair hygrometer

Production information

Haas and Hurter, Instrument maker
London, England, Northern Europe

Date

c. 1790

Materials

Brass, Glass, Hair, Mahogany

Physical description

Brass cylinders, mahogany box

Associations

Partner: Haas, Jacob Bernhard, 1753 - 1828
Partner: Hurter, Johann Heinrich, 1734 - 1799