Dent's patent liquid compass with air chamber around rim

Made:
1860-1870 in London
maker:
E Dent and Company
Dent's patent liquid compass with air chamber around rim Dent's liquid compass

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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Dent's patent liquid compass with air chamber around rim
Science Museum Group
© The Board of Trustees of the Science Museum

Dent's liquid compass
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Dent's patent liquid compass with air chamber around rim, weighted with lead to improve stability, by E Dent and Company, London, 1860-1870

Details

Category:
Navigation
Object Number:
1876-803
Materials:
brass (copper, zinc alloy), glass, mica, lead (metal), alcohol and paint
Measurements:
overall: 115 mm 315 mm, 14.215kg
type:
magnetic compass
credit:
Admiralty Hydrographic Department