4 1/2 inch boxwood sector by Holtzapffel & Co.
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Science Museum Group
© The Board of Trustees of the Science Museum
One of two boxwood sectors (4 1/2-inch) by Holtzapffel & Co., 64 Charing Cross London (B518)
Details
- Category:
- Mathematics
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- 1980-1151/2
- Materials:
- box (wood) and brass (copper, zinc alloy)
- Measurements:
-
overall - closed: 3 x 123 x 36 mm
- type:
- proportion drawing instruments and sectors
- credit:
- Wellcome Trustees
