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Telescopic alidade; Prism
Unit containing pentagonal prism, lens and lozenge prism, which fits on O.G. of telescope. Housed in the wooden box.
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Object Details
| ID: | ACO1205.1 |
|---|---|
| Type: | Telescopic alidade; Prism |
| Display location: | Not on display |
| Creator: | Kollmorgen Optical Corp |
| Date made: | 1941 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 72 mm x 83 mm x 125 mm |