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Compass card
Dry compass
Card: Mica band with open centre. Painted black with white markings graduated to quarter points. Card set on aluminium framework.
Needle: The six narrow edge bar needles are in three sets of two. They are held by two cross rods which go through the needles, and to the card by brackets. Length 3", 2.5", & 2.0" (7.6, 6.5, & 5.0 cm)
Pivot: Aluminium and jewelled pivot cap which supports radial arms and needle support.
Card: Mica band with open centre. Painted black with white markings graduated to quarter points. Card set on aluminium framework.
Needle: The six narrow edge bar needles are in three sets of two. They are held by two cross rods which go through the needles, and to the card by brackets. Length 3", 2.5", & 2.0" (7.6, 6.5, & 5.0 cm)
Pivot: Aluminium and jewelled pivot cap which supports radial arms and needle support.
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Object Details
| ID: | ACO1020 |
|---|---|
| Type: | Compass card |
| Display location: | Not on display |
| Creator: | Henry Hughes & Son Limited |
| Date made: | 1868 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 35 mm; Diameter: 175 mm |
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