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Liquid compass
Liquid compass
Card: A mica band 1.5" wide attached to the needles by a wire framework. The card is white with black markings graduated to quarter points and 0 - 360 in degrees
Needle: The four needles, in two pairs, are each held in metal tubes. One pair go through the dome and the other pair is attached by wire. Length 4" & 5.25" (10.2 cm & 13.4 cm)
Pivot: The pivot cap is incorporated into the domed float and the jewel can be removed by a screw on the top of the dome. The dome is dented.
O.A. height 1.5" (3.8 cm)
Card: A mica band 1.5" wide attached to the needles by a wire framework. The card is white with black markings graduated to quarter points and 0 - 360 in degrees
Needle: The four needles, in two pairs, are each held in metal tubes. One pair go through the dome and the other pair is attached by wire. Length 4" & 5.25" (10.2 cm & 13.4 cm)
Pivot: The pivot cap is incorporated into the domed float and the jewel can be removed by a screw on the top of the dome. The dome is dented.
O.A. height 1.5" (3.8 cm)
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Object Details
| ID: | ACO0890 |
|---|---|
| Type: | Liquid compass |
| Display location: | Not on display |
| Creator: | T. S. & J. D. Negus; E. S. Ritchie & Sons |
| Date made: | circa 1918 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 38 mm; Diameter: 190 mm |