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Liquid compass
Bowl: Brass painted black. Detachable base which also houses expansion chamber. Two filling plugs. White inside. Mounted in brass gimbals. Has compensating spheres on U shaped bracket underneath bowl. Fixed prism mount attached to verge.
Card: White with black markings graduated to sixteen points and quadrantally in degrees. Brass spike at centre. Diameter 5" (12.7cm)
Needle: Two needles held in tubes slung beneath card.
Pivot: Unsighted
Prism: Adjustabe prism shows enlarged view of segment of card.
Set in brass brackets on ACO stand, Dims: 17.75" (45.1cm) x 5.9" (15.0cm)
O.A. Height 12" (30.5cm)
Card: White with black markings graduated to sixteen points and quadrantally in degrees. Brass spike at centre. Diameter 5" (12.7cm)
Needle: Two needles held in tubes slung beneath card.
Pivot: Unsighted
Prism: Adjustabe prism shows enlarged view of segment of card.
Set in brass brackets on ACO stand, Dims: 17.75" (45.1cm) x 5.9" (15.0cm)
O.A. Height 12" (30.5cm)
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Object Details
| ID: | ACO0149 |
|---|---|
| Type: | Liquid compass |
| Display location: | Not on display |
| Creator: | Captain Chetwynd; Kelvin & James White Ltd |
| Date made: | 1908 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | 140 mm |