Object details
| ID: | ACO1262.6 |
|---|---|
| Type: | Artificial roof horizon box key |
| Display location: | Not on display |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 4 mm x 38 mm x 14 mm |
| Parts: | Roof artificial horizon (Artificial Mercurial Horizon) |