Six inch circular protractor by John Troughton, in mahogany case, c.1785
Details
- Category:
- Mathematics
- Object Number:
- 1918-122
- Materials:
- brass (copper, zinc alloy), mahogany (wood) and complete
- type:
- drawing instrument and circular protractor
- credit:
- Thomas H. Court
Parts
John Troughton's six inch circular protractor
- Materials:
- brass (copper, zinc alloy) and glass
- Object Number:
- 1918-122 Pt2
- type:
- drawing instruments and circular protractors