28 inch level, by Troughton and Simms, with case
- Made:
- 1801-1831
- maker:
- Troughton and Simms Limited
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License28 inch level made by Troughton and Simms, early 19th century
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© 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
