Deck : General Navigation - 34/2138
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| Before a magnetic compass is adjusted certain correctors must be checked to ensure that they are free of permanent magnetism. These correctors are the __________. |
| A) fore-and-aft and athwartships magnets |
| B) Flinders bar and quadrantal spheres |
| C) heeling magnet and Flinders bar |
| D) dip needle and heeling magnet |
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