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Liquid compass
Liquid compass.
Bowl: Red painted brass, glazed bottom, a heavy lead ring is fitted at base. Inside of bowl painted white with one black lubber line painted on side. Verge ring graduated to 360 deg, verge glass broken.
Card: Diameter 8" (20.2 cm) Paper card of the "Kelvin light dry type", graduated to 360 degrees and in 1/4 points, with Dutch lettering. Card is damaged.
Needle: Six light bar needles attached below card on thread framework, in Kelvin manner.
Pivot: Brass pivot stem mounted on bridge at base of bowl. A steel pivot point at top of stem engages in jewelled pivot cup carried at centre of card.
O.A. Height 5.75" (14.6 cm)
Bowl: Red painted brass, glazed bottom, a heavy lead ring is fitted at base. Inside of bowl painted white with one black lubber line painted on side. Verge ring graduated to 360 deg, verge glass broken.
Card: Diameter 8" (20.2 cm) Paper card of the "Kelvin light dry type", graduated to 360 degrees and in 1/4 points, with Dutch lettering. Card is damaged.
Needle: Six light bar needles attached below card on thread framework, in Kelvin manner.
Pivot: Brass pivot stem mounted on bridge at base of bowl. A steel pivot point at top of stem engages in jewelled pivot cup carried at centre of card.
O.A. Height 5.75" (14.6 cm)
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Object Details
| ID: | ACO0507 |
|---|---|
| Type: | Liquid compass |
| Display location: | Not on display |
| Creator: | Ludolph, W. |
| Date made: | circa 1935 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 140 mm; Diameter: 245 mm |