Method for E-compensating in electronic magnetic compasses detects a reading error caused by asymmetrically fitted soft iron without comparing with an external directional reference.
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Method to correct indicating faults of electronic magnetic compass caused by fixed or induced magnetism induced in vehicle; uses three vehicle magnetic field sensors and two inclinometers with field measurements in different orientations
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Method to correction course-indicating faults in electronic compasses produced by permanent vertical magnetism of vehicle for vehicle inclination after compensating for course-indicating faults produced by horizontal magnetism
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Compensating electronic magnetic compass with probe attached to vehicle by using magnetic field measurements at positions on vehicle forming linear equation system
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Method to compensate reading error, for electronic magnet compass in water craft, road vehicles or aircraft
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Method for electronic magnetic compass remote transmission to assess or adjust coupling between magnetic sensor and magnetic compass
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Process for correction of reading errors of remote course indicators for a compass placed on a ship or vehicle
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Averaging device for a sextant
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Telescope for an angle measuring device
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Remote link for frame mounted compass and rose - uses video camera connected by cables to control positions
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Half mirror for sextant or octant - has reflective coating across central band or one half of circular glass plate
