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Dry compass
Card- Mica covered with paper, black with white markings, graduated to 1/4 points. Has a decorated E point. Has 6 blobs of sealing to balance card.
Needle- Single flat bar needle 6.1" long tapering outwards from expanded centre to 0.75" from ends, where it rounds off gradually to blunt points.
Pivot-Cone-shaped brass pivot cap with jewel at top, screwed through centre of needle.
Needle- Single flat bar needle 6.1" long tapering outwards from expanded centre to 0.75" from ends, where it rounds off gradually to blunt points.
Pivot-Cone-shaped brass pivot cap with jewel at top, screwed through centre of needle.
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Object Details
| ID: | ACO0910 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | Syeds & Davis |
| Date made: | 1816 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 10 mm; Diameter: 155 mm |
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