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patrol type
Bowl: Brass painted black. Glazed top & bottom. Has circular weight around bottom. Has spirit level in plinth on azimuth circle, with prismatic sights opposite it. White inside with black lubber spike. Set in double gimbals.
Card: White with black markings graduated to quarter points and quadrantally in degrees. Domed float at centre. Diameter of card 6" (15.2 cm)
Needle: Two cylindrical needles slung underside of the card.
Pivot: Unsighted.
Sights: Has three movable filters and movable prism. Gun type line up using V on prism frame and nipple on rectangular filter.
O.A. height 9" (22.8 cm)
Card: White with black markings graduated to quarter points and quadrantally in degrees. Domed float at centre. Diameter of card 6" (15.2 cm)
Needle: Two cylindrical needles slung underside of the card.
Pivot: Unsighted.
Sights: Has three movable filters and movable prism. Gun type line up using V on prism frame and nipple on rectangular filter.
O.A. height 9" (22.8 cm)
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Object Details
| ID: | ACO0172 |
|---|---|
| Type: | Liquid compass |
| Display location: | Not on display |
| Creator: | Heath & Co. Ltd |
| Date made: | circa 1914 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 190 mm x 280 mm x 272 mm |