Accelerometer augmented precision compass

Accelerometer augmented precision compass

Accuracy indications for an electronic compass in a portable...

Adjustable magnetic compass

Air bubble free compass and method of manufacturing same

Alignment tool and method for aligning large machinery

Altered light navigation device

Angular measurement apparatus with referencing system

Apparatus and method for detecting azimuth and inclination...

Apparatus and method for determining azimuth, pitch and roll

Apparatus and method for determining azimuth, pitch and roll

Apparatus and method for measuring forward direction of vehicle

Apparatus and method of calibrating azimuth of mobile device

Apparatus and method of calibrating azimuth of mobile device

Apparatus for indicating relative azimuth

Arrangement for compensating for magnetic declination in an opti

Attachment for a magnetic needle assembly for vehicles

Automatic calibration method for use in electronic compass

Automatic calibration of a three-axis magnetic compass

Automatic calibration of magnetic compasses