(under subclass 85) Subject matter including means to calibrate or correct components or output measurement data of a direction indicating system comprising at least a sensing means (e.g., gyro, geomagnetic field sensor, cross coil type indicator, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
150+, for an orientation or position measurement system.
SEE OR SEARCH CLASS
33, Geometrical Instruments,
326, for selective correction for deviation of gyromagnetic compass, and subclass 502 for geometrical instruments with a calibration device or gauge for a nuclear reactor element.
73, Measuring and Testing, 1, for calibration of angle or direction sensors.
