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Dry compass
Dry compass
Card: A paper card attached to a metal circumference and to metal centre by silk threads. The paper is white with black markings graduated to points and quadrantally in degrees.
Pivot: A plain aluminium "washer" which holds the silk threads.
Needle: The eight needles, in four sets of two, are thin. They are suspended beneath the card by a different silk thread system to that of the card. Lengths 2.75", 2.5", 2.25" & 1.75" (7.0 cm, 6.3 cm, 5.7 cm & 4.5 cm)
Card: A paper card attached to a metal circumference and to metal centre by silk threads. The paper is white with black markings graduated to points and quadrantally in degrees.
Pivot: A plain aluminium "washer" which holds the silk threads.
Needle: The eight needles, in four sets of two, are thin. They are suspended beneath the card by a different silk thread system to that of the card. Lengths 2.75", 2.5", 2.25" & 1.75" (7.0 cm, 6.3 cm, 5.7 cm & 4.5 cm)
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Object Details
| ID: | ACO0873 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | Doignon, L. |
| Date made: | Early 20th Century |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 10 mm; Diameter: 200 mm |