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Compass card
Card for a boat's compass.
Card: A mica card attached to the needles. The card is white with black markings graduated to half points and quadrantally in degrees The degree markings are inverted for use with a prism.
Needle: Two edge bar needles attached to the float. Length 3.5" (9 cm) x 0.5" (1.2 cm)
Pivot: The pivot is incorporated in a very highly domed float and can be removed by a screw at the top of the dome.
O.A. height 2.25" (5.7 cm)
Card: A mica card attached to the needles. The card is white with black markings graduated to half points and quadrantally in degrees The degree markings are inverted for use with a prism.
Needle: Two edge bar needles attached to the float. Length 3.5" (9 cm) x 0.5" (1.2 cm)
Pivot: The pivot is incorporated in a very highly domed float and can be removed by a screw at the top of the dome.
O.A. height 2.25" (5.7 cm)
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Object Details
| ID: | ACO1054 |
|---|---|
| Type: | Compass card |
| Display location: | Not on display |
| Creator: | Edward John Dent & Co. |
| Date made: | Feb 1914 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | 109 x 49 mm |
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