When the geomantic compass measures the direction of a fixed object, it overlaps with the red line in Tianchi. Satellite attitude control methods are also different, because there is no latitude and longitude reticle, and the passive attitude control method has spin stability.
See the example in the figure:
You must put the iron on your body first. Satellite attitude control can be divided into passive attitude control and active attitude control. Place the compass between the chest and abdomen, near or parallel to the edge of the measured object.