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The Compass Card and its Mountings
The Position of the Standard Compass
Properties of a Magnet 1418
24 other sections not shown
abaft the compass adjusting the compass aft magnet athwartship beams athwartship magnet axis axle azimuth binnacle blue pole caused centimetres centre Co-eff co-efficient compass bearing compass card compass needle compass north compass position compensated corrected correctors deflector deviascope deviation due dip circle directive force distance disturbing force due to hard earth's magnetic Flinders bar fore and aft gyrocompass gyroscope hard iron heading east heeling error due high side hour angle induced magnetism Lambda latitude lines of force lubber line magnetic bearing magnetic field magnetic force magnetic meridian magnetised magnetometer mean neutral course north end north hemisphere number of vibrations permanent magnetism port produced quadrantal deviation red polarity red pole represents right angles scale reading semi-circular deviation ship's head ship's magnetic shore sine spheres starboard sub-permanent magnetism true azimuth variation vertical force instrument vertical iron vertical magnet vertical soft iron westerly deviation zero