Cun (unit)

The cun (Chinese寸, Pinyin cùn, W.-G. ts'un as a unit character cun also; inches) is a traditional Chinese units and defined as 1/10 of a Chinese foot (Chi). In mainland China, the Chi in 1984 set to 1/3 meters, and with it the Cun 1/30 meter ( 31/3 inches ).

In traditional Chinese medicine, the cun is a relative unit of measurement that is used to locate the puncture points for the insertion of needles in acupuncture. It falls individually different from for every person. The width of the thumb at the level of a cun Endgliedgelenks usually defined as the patient. The width of the index and middle fingers together represent approximately 1.5 cun, the width of the four fingers folded 3 cun. The Cun an average U.S. citizen corresponds to approximately 18.7 millimeters.