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Bearing Plate
This is a solid brass plate graduated quadrantally in degrees and to 8 points. It has a moveable diameter which carries the hinged sights which can be locked up right by small levers. The back sight is a slit which has a moveable shade attached. There is a notch at the top. The fore sight is an open arch and thread. there is a screw at the centre of the plate.
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Object Details
| ID: | ACO0465 |
|---|---|
| Type: | Bearing Plate |
| Display location: | Not on display |
| Creator: | Froment |
| Date made: | Unknown |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 45 mm; Diameter: 190 mm |