Is the enclosed balcony floating from the second floor of the self-built house facing indoors? How to set the center of the compass
As for how to determine the center point of the compass, we should first choose a more accurate compass, put it flat and eliminate the influence of the interference magnetic field. Then, choose a reference point in the room on the second floor, which can be the center of the room or the east direction of the room. At this reference point, first determine the true north direction of this direction, and then determine its relative orientation with a compass according to the true north direction. Finally, put the compass in the position of the closed balcony, and refer to the determined relative orientation and the actual direction of the closed balcony, so as to judge the azimuth of the balcony position, and then judge whether it belongs to the indoor orientation.