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Heeling error instrument
A pair of magnetic needles are mounted on iridium pivots working on jewel surfaces and a small vertical magnet which is carried inside the central stem can be raised or lowered by means of a screw operated by a graduated head above the glass face of the instrument.
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Object Details
| ID: | ACO0075 |
|---|---|
| Type: | Heeling error instrument |
| Display location: | Not on display |
| Creator: | White, James |
| Date made: | 1879 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 63 mm x 89 mm x 38 mm |