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Azimuth Circle
This circle is made of brass and has fore and back sights. The fore sight consists of a tall hinged open arch with sighting thread (missing) and a short celestial reflector. The back sight is fixed and consists of a curved bracket containing a small prism. There is a peephole and slit. There are fixtures which may have held filters but are missing. The ring is 0.8" (2.3cm) deep and is flanged on the outside.
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Object Details
| ID: | ACO0052 |
|---|---|
| Type: | Azimuth Circle |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | 1813 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 75 mm; Diameter: 155 mm |
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