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Dry compass card
Dry compass
Card: Consists of a paper band attached to metal circumference and metal centre by fine silk threads. The paper is white with black markings graduated to quarter points and quadrantally in degrees. There is a silver paper centre.
Pivot: Consists only of a thin aluminium "washer" which holds the radial silk threads.
Needle: The eight needles, two sets of four, are thin. They are suspended beneath the card by a different silk thread system to that of the card.
Length 3.5" (8.7 cm), 3.25" (8.3 cm), 2.75" (7 cm) & 2.25" (5.6 cm)
Card: Consists of a paper band attached to metal circumference and metal centre by fine silk threads. The paper is white with black markings graduated to quarter points and quadrantally in degrees. There is a silver paper centre.
Pivot: Consists only of a thin aluminium "washer" which holds the radial silk threads.
Needle: The eight needles, two sets of four, are thin. They are suspended beneath the card by a different silk thread system to that of the card.
Length 3.5" (8.7 cm), 3.25" (8.3 cm), 2.75" (7 cm) & 2.25" (5.6 cm)
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Object Details
| ID: | ACO1033 |
|---|---|
| Type: | Dry compass card |
| Display location: | Not on display |
| Creator: | Kelvin Bottomley & Baird Ltd |
| Date made: | circa 1940 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 10 mm; Diameter: 250 mm |
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