Instrument case
Case for sector by Troughton, London
- Materials:
- wood
- Object Number:
- 1911-235 Pt1
- type:
- instrument case
- Image ©
- The Board of Trustees of the Science Museum
Sector by Troughton
- maker:
- Edward Troughton
This image is released under a CC BY-NC-SA 4.0
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Science Museum Group Collection
© The Board of Trustees of the Science Museum
Sector by Troughton, brass, engraved "Troughton, London" 12" x 3 1/4" when closed, case 14" x 4 1/2" x 1", "H.O.2." painted on case
This brass sector is a gentleman's instrument dating from the early 19th century. Sectors were used in calculations involving proportion. This instrument contains trigonometrical and navigational scales.
Details
- Category:
- Mathematics
- Object Number:
- 1911-235
- Measurements:
-
overall: 10 x 300 x 80 mm
- type:
- proportion drawing instruments and sectors
- credit:
- British Admiralty (Hydrographic Department)
Parts
Sector by Troughton
Sector by Troughton, brass, engraved "Troughton, London" 12" x 3 1/4" when closed, "H.O.2."
- Measurements:
-
overall: 4 mm x 325 mm x 170 mm, 1.028 kg
- Object Number:
- 1911-235 Pt2
- type:
- proportion drawing instruments and sectors
