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Transmitting Magnetic Compasses
The History of the GyroCompass
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19th century adjusted Admiralty aeroplane aircraft compasses alternating current alters course angle Anschiitz arrangement attached azimuth azimuth compass bearings binnacle blue pole bowl cause centre century coil compass card compass needles component correction damping deflected dial diameter earth's field East easterly effect electrical equal error fitted Flinders bar flux force fore-and-aft friction German gimballed Gowin Knight gyro axis gyro direction indicator gyro-compass gyroscope horizontal instrument Knight known later latitude liquid compass lodestone longitude lubber's point magnetic compass magnetic element magnetic field magnetic poles mercury meridian method motor mounted move navigation north-south observed operated oscillation passing Peter Barlow Petrus Peregrinus phantom plane Plate Polaroid position precession quadrantal repeaters ring rotation rotor round Royal Air Force Royal Navy search-coil Selsyn ship ship's side soft iron South Sperry star sun-compass sundial Thomson torque transmitting compasses Transmitting Magnetic Compass turn vertical voyage weight West Wheatstone bridge