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Alidade
Graduations: One edge graduated in centimetres to 25.
Sights: Two hinged sight vanes 7.5" (19cm) long. One sight vane has a vertical slit with a rectangular aperture above; the other has a rectangular aperture with a vertical slit above.
Sights: Two hinged sight vanes 7.5" (19cm) long. One sight vane has a vertical slit with a rectangular aperture above; the other has a rectangular aperture with a vertical slit above.
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Object Details
| ID: | NAV1360 |
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| Type: | Alidade |
| Display location: | Not on display |
| Creator: | Meurand, Antoine-Joseph |
| Date made: | circa 1780 |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 20 mm x 490 mm x 62 mm |