Ritchie's patent liquid compass with hollow metal cross type compass rose in tin bowl

Made:
07-04-1863 in Boston
patentee:
Ritchie, Edward Samuel, Edward Samuel
Ritchie's patent liquid compass with hollow metal cross type Ritchie's patent liquid compass (cover glass of compass broken)

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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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Ritchie's patent liquid compass with hollow metal cross type
Science Museum Group
© The Board of Trustees of the Science Museum

Ritchie's patent liquid compass (cover glass of compass broken)
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Ritchie's patent liquid compass with hollow metal cross type compass rose in tin bowl, (cover glass of compass broken - see note). By E. S. Ritchie (patentee), Boston, 1863.

Details

Category:
Navigation
Object Number:
1917-60
Materials:
brass (copper, zinc alloy), metal (unknown), cardboard, tin (metal), paint and incomplete: liquid has been drained.
Measurements:
overall: 210 mm, 320 mm, 9.91kg
type:
magnetic compass
credit:
Wiggins, F. and Sons