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Dry compass
Card-Mica covered with paper. Black with white markings graduated to 1/4 points. Decorated Est point.
Needle-Flat edge bar needle which tapers outwards from the centre to near the ends where it rounds off gradually to flattened ends, this being a feature of Syeds Card needles, 4.75" (12.1cm) long. Has crossbar at 90 degrees to needle securing it to card. One arm of crossbar has moving weight.
Pivot-Cone-shaped brass pivot cap with large jewel at top.
Needle-Flat edge bar needle which tapers outwards from the centre to near the ends where it rounds off gradually to flattened ends, this being a feature of Syeds Card needles, 4.75" (12.1cm) long. Has crossbar at 90 degrees to needle securing it to card. One arm of crossbar has moving weight.
Pivot-Cone-shaped brass pivot cap with large jewel at top.
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Object Details
| ID: | ACO0917 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | Syeds & Davis |
| Date made: | 1819 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 10 mm; Diameter: 120 mm |