28 inch level, by Troughton and Simms, with case

28 inch level made by Troughton and Simms, early 19th century

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28 inch level made by Troughton and Simms, early 19th century
Science Museum Group
© The Board of Trustees of the Science Museum

28 inch level made by Troughton and Simms, early 19th century, used by J.A. Lloyd in 1831 to ascertain the fall of the Thames between London Bridge and Sheerness in box

Details

Category:
Surveying
Object Number:
1900-155
type:
level
credit:
The Royal Society