What are the three needle plate?

Compass three refers to the site are three needle, day plate suture needle, needle plate.

To the turf is needle, is 24 mountain, is used to tell direction positioning set to use.This 24 mountain respectively with twelve earthly branches plus eight dry four dimensions.Twelve earthly branches for the child, ugly and Yin, sockets, and the third, and before noon, shen, unitary, and hai, eight for a, b, c, d, g, essien, nonyl, decyl, four dimensions for dry, kun, gen, xun, add up to a total of 24 mountain.With gossip, by contrast, is the day after tomorrow around eight diagrams, each sticks 45 degrees, sticks tube three mountain, each mountain of fifteen degrees.

Day dish stitches, but also to 24 mountain, but scale than turf is needle sent seven and a half, just for half of the grid.Intraday needles, is still to 24 mountain, but scale than turf is needle sent 15 degrees, is just a grid.

Although three needle plate are to 24 mountain, but usage is different.