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Dry compass
Card-Mica painted black with white markings, graduated to 1/2 points and decorated East point.
Needle-Two thin flat needles of lozenge shape, 3.35" (8.5cm) in length, attached to card by light wire framework which also carries the pivot cap.
Pivot- Cone-shaped cap with jewel at top, screwed through wire framework which carries the needles.
Needle-Two thin flat needles of lozenge shape, 3.35" (8.5cm) in length, attached to card by light wire framework which also carries the pivot cap.
Pivot- Cone-shaped cap with jewel at top, screwed through wire framework which carries the needles.
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Object Details
| ID: | ACO0983 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | 1846 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 15 mm; Diameter: 100 mm |