Douglas type reflecting protractor, British, 1811-1825

Made:
1811-1825 in London
maker:
Howard Douglas
and
Cary family
Douglas type reflecting protractor without caseby the Cary

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Douglas type reflecting protractor without caseby the Cary
Science Museum Group
© The Board of Trustees of the Science Museum

Douglas type reflecting protractor without caseby the Cary family, London, England, 1811-1825.

Details

Category:
Surveying
Object Number:
1901-75
Materials:
brass (copper, zinc alloy) and glass
Measurements:
overall: 37 mm x 155 mm x 110 mm, .305kg
type:
protractor
credit:
Robottom, L.M.