Circular protractor
- Made:
- London
- maker:
- Jeremiah Sisson
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Science Museum Group
© The Board of Trustees of the Science Museum
Circular protractor, brass by Jeremiah Sisson, divided to 1/2 degrees, diameter 6 3/16", c.1770
Details
- Category:
- Mathematics
- Object Number:
- 1919-292
- Materials:
- brass (copper, zinc alloy)
- Measurements:
-
overall: 5 mm 155 mm, 0.12 kg
- type:
- drawing instruments and circular protractors
- credit:
- Thomas H. Court
