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Dry compass
Card-Mica covered with paper, black with white markings, graduated to 32 points. Has decorated E point. Fitted with a heavy metal rim which is graduated quadrantally in degrees.
Needle-Unusual single bar edge needle, 6.5" long, 0.2" deep at centre, increasing to 0.52 deep at ends. Has expanded centre to accommodate pivot cap.
Pivot- Cone-shaped brass pivot cap with jewel at top, screwed through centre of needle.
Needle-Unusual single bar edge needle, 6.5" long, 0.2" deep at centre, increasing to 0.52 deep at ends. Has expanded centre to accommodate pivot cap.
Pivot- Cone-shaped brass pivot cap with jewel at top, screwed through centre of needle.
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Object Details
| ID: | ACO0914 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | circa 1800 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 20 mm; Diameter: 167 mm |
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