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Compass card
Card for a liquid compass.
Card: A mica card attached to float by a wire complex. The card is white with black markings graduated to quarter points and quadrantally in degrees. The quadrantal markings are normal and inverted for use with a prism.
Needle: The two needles are enclosed inn tubes which are attached to the float.
length 3.8" (9.8 cm)
Pivot: The pivot is incorporated in the domed float and has a thumb screw at the top to facilitate changing the jewel.
O.A. height 2.25" 95.6 cm)
Card: A mica card attached to float by a wire complex. The card is white with black markings graduated to quarter points and quadrantally in degrees. The quadrantal markings are normal and inverted for use with a prism.
Needle: The two needles are enclosed inn tubes which are attached to the float.
length 3.8" (9.8 cm)
Pivot: The pivot is incorporated in the domed float and has a thumb screw at the top to facilitate changing the jewel.
O.A. height 2.25" 95.6 cm)
For more information about using images from our Collection, please contact RMG Images.
Object details
| ID: | ACO1058 |
|---|---|
| Type: | Compass card |
| Display location: | Not on display |
| Creator: | Captain Chetwynd; Kelvin Bottomley & Baird Ltd |
| Date made: | circa 1907 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | 161 x 52 mm |