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Dry compass
Card- Mica covered with paper. White with black and white markings, graduated to 1/4 points.
Needle- One short edge bar type, 4" long, having a heavy centre boss which carries the pivot cap. Mounted on a light metal ring which is screwed to card.
Pivot- Small cone-shaped brass pivot cap with jewel at top, attached to centre boss of needle.
Needle- One short edge bar type, 4" long, having a heavy centre boss which carries the pivot cap. Mounted on a light metal ring which is screwed to card.
Pivot- Small cone-shaped brass pivot cap with jewel at top, attached to centre boss of needle.
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Object Details
| ID: | ACO0946 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | Henry Barrow & Co |
| Vessels: | Collingwood (1841) |
| Date made: | 1837-1840; 1837-40 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 25 mm; Diameter: 185 mm |
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