Submarine liquid compass
Bowl- Aluminium, painted grey, filler plug at side. At base of bowl are fitted two expansion chambers, a glass aperture to permit projection of card image onto screen, three legs and two frames to take corretor magnet strips. Inside of bowl fitted with inner skin (black) and a fitting on aft side permits air bubbles to be removed by tilting bowl and allowing them to run up between the two skins. A metal lubber pointer is fitted which can be moved against a graduated scale by a knob working through a gland on the fore side of bowl. Mounted in aluminium gimbal ring 10.75" (27.3cm) in diameter.
Card- Metal card with heavy float. Markings are perforations graduated to 360 degs.
Needle- Four flat needles in metal cases mounted below card.
Card- Metal card with heavy float. Markings are perforations graduated to 360 degs.
Needle- Four flat needles in metal cases mounted below card.
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Object Details
ID: | ACO0488 |
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Type: | Submarine liquid compass |
Display location: | Not on display |
Creator: | Bamberg, Carl |
Date made: | circa 1910 |
Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
Measurements: | Overall: 160 mm; Diameter: 275 mm |
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