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Dry card compass
Bowl-Copper, with glass bottom. Top and bottom glasses set in brass verge rings. Set in brass gimbals. Lubber line painted on white background.
Card-Mica, painted white with black graduations. Graduated to 1/4 points. Brass pivot cap. Dia. 6.9" (17.5cm)
Needle-Single edge bar needle. Brass cross each carrying balancing weights. Length 6.9" (17.5cm)
Pivot-Steel pin mounted on a spring contained in a brass socket, attached to a double curved bracket secured to side of bowl.
Mounted on ACO stand 11.25 (28.5cm) square
Card-Mica, painted white with black graduations. Graduated to 1/4 points. Brass pivot cap. Dia. 6.9" (17.5cm)
Needle-Single edge bar needle. Brass cross each carrying balancing weights. Length 6.9" (17.5cm)
Pivot-Steel pin mounted on a spring contained in a brass socket, attached to a double curved bracket secured to side of bowl.
Mounted on ACO stand 11.25 (28.5cm) square
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Object Details
| ID: | ACO0012 |
|---|---|
| Type: | Dry card compass |
| Display location: | Not on display |
| Creator: | Harris, W Snow; West & Co |
| Date made: | 1857 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 170 mm x 287 mm x 290 mm |
| Parts: | Dry card compass |