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Dip Circle
Bowl-Glazed front and back with spirit level on top. Graduated rim on inside, quadrantally in degrees from the horizontal. Two magnifiers (across the diameter) for reading the scale.
Needle-Flat bar type, pointed at ends. Length 15.3 cm .
Pivot-Double-ended steel pivot resting on knife-edge bearings attached to vertical mount secured to lower rim of bowl. Fitted with needle lifter.
Stand- Circular, graduated from 0 to 180 degrees through East and West; mounted on three adjustable legs.
Needle-Flat bar type, pointed at ends. Length 15.3 cm .
Pivot-Double-ended steel pivot resting on knife-edge bearings attached to vertical mount secured to lower rim of bowl. Fitted with needle lifter.
Stand- Circular, graduated from 0 to 180 degrees through East and West; mounted on three adjustable legs.
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Object Details
| ID: | ACO0087 |
|---|---|
| Type: | Dip Circle |
| Display location: | Not on display |
| Creator: | Robinson, Thomas Charles; Robinson |
| Date made: | circa 1832 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 290 mm x 200 mm x 200 mm |
| Parts: | Dip Circle |