A compass originated in the song dynasty?

The appearance of the compass, according to the literature, is in the song dynasty.

Though the northern song dynasty shen kua in MengXi stature is recorded by the compass placed four kinds of methods, turning method, water float, bowl lip nail turning method and ray of suspension method, but is not the real compass, the compass in the southern song dynasty, is the earliest recorded three variations in the recorded by words recorded in a way: "the ground screw or a meridian is the needle, or with stitches between meridian nonyl c...Is of the north and south of heaven and earth, when use meridian, partial or "jiangnan, harder to use meridian is, therefore, c nonyl of refs."

"Screw" here is "luo", "to" derived from site, site due to the main effect is indexing columns to the north, the rites, body country via wild hydrophobic ":" the path to the north and the south."So the ground is also called the tray, so, screw, Luo Panjing dish is a meaning.