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Liquid compass - aircraft
Liquid compass
Bowl: Grey painted brass, filler plug and expansion chamber unsighted. Inside of bowl painted white with a long wire lubber pointer projecting from the side. Mounted in an outer casing of grey painted brass 6.25" (15.9 cm) dia. fitted with a mounting spigot with clamp at base.
Card: Dia 1.25" (3.1 cm) White painted mica ring with black markings, graduated to 360 degrees, attached by a framework to a black float at centre. The framework carries four wire damper arms at cardinal points.
Needle: Four nedles of circular section are mounted below card.
Pivot: Unsighted but pivot stem can be seen attached to a bridge mounted across base of bowl.
OA height 4.25" (10.8 cm)
Bowl: Grey painted brass, filler plug and expansion chamber unsighted. Inside of bowl painted white with a long wire lubber pointer projecting from the side. Mounted in an outer casing of grey painted brass 6.25" (15.9 cm) dia. fitted with a mounting spigot with clamp at base.
Card: Dia 1.25" (3.1 cm) White painted mica ring with black markings, graduated to 360 degrees, attached by a framework to a black float at centre. The framework carries four wire damper arms at cardinal points.
Needle: Four nedles of circular section are mounted below card.
Pivot: Unsighted but pivot stem can be seen attached to a bridge mounted across base of bowl.
OA height 4.25" (10.8 cm)
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Object Details
| ID: | ACO1326 |
|---|---|
| Type: | Liquid compass - aircraft |
| Display location: | Not on display |
| Creator: | Air Ministry |
| Date made: | circa 1927 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 105 mm; Diameter: 155 mm |