Artificial mercury horizon.

Made:
1845-1855 in England
Artificial mercury horizon in fitted wooden case

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Artificial mercury horizon in fitted wooden case
Science Museum Group
© The Board of Trustees of the Science Museum

Artificial mercury horizon in fitted wooden case, made by John Dennett Potter, Poultry, City of London, England, 1860-1870. Consisting of a rectangular cast iron trough, brass-lined, roof-shaped cover with glazed side panels and circular mercury storage jar with threaded stopper and spout. Used by the Hydrographic Offfice of the British Admiralty (broad arrow property mark).

Details

Category:
Astronomy
Object Number:
1998-650
Materials:
brass, boxwood, glass, mahogany and complete
Measurements:
overall: 100 x 170 x 60 mm
type:
artificial horizon - mercury
credit:
Mr A.C. Reid