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Alidade
Graduations-On one edge of bar 0-16 "YDS - 6 INs TO A MILE", the other edge 35-0 degs "HORIZL- EQUIVs-NORMAL".
Sights-A hinged sight vane 1.6" (4cm) long with a rectangular aperture is fitted at one end of bar. At the other end there is an azimuth ring 3" (7.6cm) dia. graduated to 360 degs, carrying a horizontally pivoted mirror with a "V" sight on its upper edge.
Sights-A hinged sight vane 1.6" (4cm) long with a rectangular aperture is fitted at one end of bar. At the other end there is an azimuth ring 3" (7.6cm) dia. graduated to 360 degs, carrying a horizontally pivoted mirror with a "V" sight on its upper edge.
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Object Details
| ID: | NAV1362 |
|---|---|
| Type: | Alidade |
| Display location: | Not on display |
| Creator: | Steward, J. H. |
| Date made: | 1903 |
| Credit: | National Maritime Museum, Greenwich, London, Royal United Service Institution Collection |
| Measurements: | Overall: 15 mm x 238 mm x 75 mm |