Gimballed ouroboros compass device with digital logic
Gravity adjusted compass
Gyro aided magnetic compass
Hand compasses
Heading detecting apparatus
High pressure compass housing
High resolution compass card position decoder
Hybrid sensor module and sensing method using the same
Illuminating navigation device
Inclination sensor and azimuth measuring apparatus using...
Inclination-compensating display device for a compass
Index error correction for flux valve heading repeater system
Input device for using geomagnetic sensor and a method...
Latitude compensator for flux valve heading repeater system
Low cost electronic compass with 2D magnetometer
Luminescent indication compass
Magic compass
Magnetic compass
Magnetic compass
Magnetic compass