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Astronomical compendium compass
Compass for the astronomical compendium for latitude 48° North. The second section can be unscrewed to a reveal, in its underside, a horizontal dial set over a compass. The compass has a printed and painted compass card with an eight-point rose and all 32 points marked. A glass plate covers all and is held in place by the hour ring of the dial.
Crossing the compass glass are curling supports that hold the shaped brass hinged gnomon, which folds flat when not in use.
Crossing the compass glass are curling supports that hold the shaped brass hinged gnomon, which folds flat when not in use.
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Object Details
| ID: | AST0415.2 |
|---|---|
| Type: | Astronomical compendium compass |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | 17th century |
| Credit: | National Maritime Museum, Greenwich, London, Caird Collection |
| Measurements: | Overall: 23 mm; Diameter: 42 mm |
| Parts: | Astronomical compendium |