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LicenseOptical opposite and square by A. Beaulieu, Brussels, 1801-1830.
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© The Board of Trustees of the Science Museum
Optical opposite and square by A. Beaulieu, Brussels, 1801-1830.
Details
- Category:
- Surveying
- Object Number:
- 1911-154
- Materials:
- brass (copper, zinc alloy) and glass
- Measurements:
-
overall: 23 mm x 107 mm x 26 mm, .175kg
- type:
- surveying instrument
- credit:
- Court, Thomas Henry
