1. First open the compass table, loosen the system screw, and let the magnetic needle rotate freely. Don't mix other movements with your hands. ?
2. Then put the compass on your chest, and the upper level of the compass must be aimed at the measured object.
3. Turn the mirror so that both the object and hyperopia are reflected in the mirror, and both can be seen in the mirror.
4. Make the object, the tip of the short sight on the long sight and the center line of the mirror in a straight line.
5. At the same time, keep the compass level. When the magnetic needle stops swinging, you can directly read the reading on the circular dial pointed by the magnetic needle, or press the brake screw to read it again.
There are many kinds of compasses, such as ternary disk, three-in-one disk, ternary three-in-one dual-purpose disk, easy disk, mysterious disk, and unique disks of users in various schools. However, no matter what kind of compass it is, there must be a layer in the middle that is in the direction of the twenty-four mountains. From the north, they are Renzigui, Ugly Genyin, Jiamaoyi, Chen Xunsi, Bingwuding, Shen, Geng Youxin and Xu Ganhai. * * * Twenty-four directions.
The ancients in China believed that man's gas field was controlled by the gas field of the universe, that harmony between man and the universe was auspicious, and disharmony between man and the universe was fierce. So, by experience, they put all levels of information in the universe, such as the stars in the sky, everything represented by the five actions on the earth, heavenly stems and earthly branches and so on. , all on the compass.
Geomantic omen is to find the most suitable position or time for a specific person or thing through the rotation of a magnetic needle. Although the concept of "magnetic field" is not mentioned in geomantic omen, the coordination of the directions, orientations and intervals of each layer on the compass implies the law of "magnetic field".