Spherometer, reads to 1/10

Made:
1845-1855 in London
maker:
George Dollond
Spherometer, reads to 1/10,000-inches, by Dollond, London

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Spherometer, reads to 1/10,000-inches, by Dollond, London
Science Museum Group
© The Board of Trustees of the Science Museum

Spherometer, reads to 1/10,000-inches, by Dollond, London, England, c. 1850.

Details

Category:
Optics
Object Number:
1921-240
Materials:
metal (unknown), copper (alloy), brass (copper, zinc alloy) and steel (metal)
Measurements:
overall: 66 mm x 110 mm x 110 mm, , .11kg
type:
spherometer
credit:
Court, Thomas Henry