Gyroscope structure and principle:
High-speed rotating gyroscopes have directionality (fixed-axis). Together with the internal and external frames, it forms a "universal rack." As long as the direction of the gyro axis is unchanged, the direction of the compass that is integrated with the outer frame does not change.
When the gyroscope is started, artificially directing the gyro axis to geographic north (not magnetic north) will ensure that the N pole of the compass always points to geographical north.
In this way, the true north of the gyro compass can be used as a reference direction to measure the inclination of the well.
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