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Object Details
| ID: | ACO0436.3 |
|---|---|
| Type: | Magnetic block |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | circa 1840 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 7 mm x 44 mm x 11 mm |
| Parts: | Compound needle |