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Drafting arm - aircraft
This instrument consists of two sets of parallel arms joined by a triangular joint midway. At one end is a pivot and clamp attached to a mounting bar, 36.3" (92cm) long. At other end is a graduated dial to 360 degs. mounted on a perspex plate 12" x 4" (30.5 x 10.1cm) which can revolve in azimuth. Made in brass
Parallel bars-11" (28cm) and 9" (22.9cm) long
Parallel bars-11" (28cm) and 9" (22.9cm) long
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Object Details
| ID: | ACO1242 |
|---|---|
| Type: | Drafting arm - aircraft |
| Display location: | Not on display |
| Creator: | Air Ministry |
| Date made: | circa 1940 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 75 mm x 920 mm x 175 mm x 89 mm |
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