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Type P.1
Liquid compass
Bowl: Black painted brass, two filler plugs at side, expansion chamber at base. Mounted at 45 degrees in protective case 5.5" x 5.5" x 3.0" (14cm x 14cm x 7.6cm) containing anti-vibration system. Verge ring carries electric lamp, for illuminating card at night, and a corrector magnet carrier is attached at top. Inside of bowl painted white. Fitted with black wire lubber line on the fore side of bowl.
Card: Small light white paper card, graduated in black to 360 degrees, attached to light framework at centre of which is attached a pivot cap.
Needle: Two needle magnets attached below card.
Pivot: Unsighted, as verge glass is partly opaque, believed to be of the inverted type.
O.A. height 8.0" (20.3cm)
Bowl: Black painted brass, two filler plugs at side, expansion chamber at base. Mounted at 45 degrees in protective case 5.5" x 5.5" x 3.0" (14cm x 14cm x 7.6cm) containing anti-vibration system. Verge ring carries electric lamp, for illuminating card at night, and a corrector magnet carrier is attached at top. Inside of bowl painted white. Fitted with black wire lubber line on the fore side of bowl.
Card: Small light white paper card, graduated in black to 360 degrees, attached to light framework at centre of which is attached a pivot cap.
Needle: Two needle magnets attached below card.
Pivot: Unsighted, as verge glass is partly opaque, believed to be of the inverted type.
O.A. height 8.0" (20.3cm)
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Object Details
| ID: | ACO0334 |
|---|---|
| Type: | Liquid compass - aircraft |
| Display location: | Not on display |
| Creator: | Admiralty Compass Observatory |
| Date made: | 1924 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 200 mm x 140 mm x 140 mm |