Introduction to Gyro Half Compass
Structure: Three-degree-of-freedom gyro and frame, heading dial, heading mark, azimuth trimmer and level corrector.
Principle: Axis's precession and precession
Category: (1) Direct reading gyro half compass (2) Far reading gyro half compass
Advantages: simple structure, low cost, and stable and accurate instructions.
Disadvantages: The compass baseline needs to be manually adjusted. Therefore, it must be used in conjunction with a magnetic compass in flight, and there is a self-propelled error.