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Liquid compass
Liquid compass
Card: An aluminium card which incorporates a domed float. The card is marked by both the eight points and the 360 degree markings being punched out. There are also four other holes punched out.
Needle: The four needles, in two pairs, are each held in metal tubes and are all attached to the domed float by metal brackets. Length 2.5" (6.4 cm) & 3.4" (8.6 cm)
Pivot: The pivot cap is incorporated into the domed float and the jewel can be replaced by a screw on the top of the dome.
O.A. height 1.5" (3.8 cm)
Card: An aluminium card which incorporates a domed float. The card is marked by both the eight points and the 360 degree markings being punched out. There are also four other holes punched out.
Needle: The four needles, in two pairs, are each held in metal tubes and are all attached to the domed float by metal brackets. Length 2.5" (6.4 cm) & 3.4" (8.6 cm)
Pivot: The pivot cap is incorporated into the domed float and the jewel can be replaced by a screw on the top of the dome.
O.A. height 1.5" (3.8 cm)
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Object Details
| ID: | ACO0893 |
|---|---|
| Type: | Liquid compass |
| Display location: | Not on display |
| Creator: | Geophysical Instrument Co |
| Date made: | circa 1940 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 45 mm; Diameter: 190 mm |