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Dry compass
Dry compass
Card: Mica band 3" wide, with markings painted on. Grey with black markings graduated to quarter points and quadrantally in degrees.
Needle: Four edge bar needles set below light framework which supports the card. lenght 2 x 6" (15.2 cm), 2 x 7" (17.8 cm). The four needles anr 0.5" (1.6 cm) deep.
Pivot: Small metal pivot cap set at cross place of framework.
Card: Mica band 3" wide, with markings painted on. Grey with black markings graduated to quarter points and quadrantally in degrees.
Needle: Four edge bar needles set below light framework which supports the card. lenght 2 x 6" (15.2 cm), 2 x 7" (17.8 cm). The four needles anr 0.5" (1.6 cm) deep.
Pivot: Small metal pivot cap set at cross place of framework.
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Object Details
| ID: | ACO1017 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | circa 1880 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 24 mm; Diameter: 300 mm |
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