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Dry compass
Dry compass
Card: Mica covered with paper, white with black markings, graduated to half points and quadrantally in degrees, decorated East point.
Needle: Flat bar type with rounded ends 5.0" (12.7 cm) in length. The centre of needle expands to provide aperture for pivot cap. The centre part of needle has a piece of white card pasted over it.
Pivot: Cone shaped brass cap with jewel at the top, screwed through aperture at centre of needle.
Card: Mica covered with paper, white with black markings, graduated to half points and quadrantally in degrees, decorated East point.
Needle: Flat bar type with rounded ends 5.0" (12.7 cm) in length. The centre of needle expands to provide aperture for pivot cap. The centre part of needle has a piece of white card pasted over it.
Pivot: Cone shaped brass cap with jewel at the top, screwed through aperture at centre of needle.
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Object Details
| ID: | ACO1031 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | circa 1850 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 10 mm; Diameter: 150 mm |