Liquid compass - submarine
Bowl: Grey painted brass, filler plug at side, expansion chamber at base incorporated with glazed bottom of bowl. Inside of bowl painted white with a black wire lubber pointer projecting from side. Mounted in a grey-painted brass gimbal ring 6.5" (16.5 cm) dia.
Card: Dia. 3.25" (8.2 cm) white painted mica with clear edge, black markings, graduated to 16 points, quadrantally in degrees, and to 360 deg. Attached to a white-painted float at centre.
Needle: 2 x 2.0" (5.1 cm) of circular section, mounted below float.
Pivot: Brass pivot stem secured at centre of bridge mounted across base of bowl, carries a pivot point which engages in jewelled conical pivot cup at centre of float.
O.A. Height 3.25" (8.2 cm)
In wooden box 7.2" x 7.2" x 5.25" (18.2 x 18.2 x 13.4 cm)
Card: Dia. 3.25" (8.2 cm) white painted mica with clear edge, black markings, graduated to 16 points, quadrantally in degrees, and to 360 deg. Attached to a white-painted float at centre.
Needle: 2 x 2.0" (5.1 cm) of circular section, mounted below float.
Pivot: Brass pivot stem secured at centre of bridge mounted across base of bowl, carries a pivot point which engages in jewelled conical pivot cup at centre of float.
O.A. Height 3.25" (8.2 cm)
In wooden box 7.2" x 7.2" x 5.25" (18.2 x 18.2 x 13.4 cm)
Object Details
ID: | ACO0156 |
---|---|
Type: | Liquid compass - submarine |
Display location: | Not on display |
Creator: | Unknown |
Date made: | circa 1940 |
Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
Measurements: | Overall: 135 mm x 210 mm x 180 mm |
Parts: | Liquid compass - submarine |
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