tấc là gì

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Cun
Wooden ruler of the western Han dynasty, unearthed at Jinguan Pass Site in Jinta County Bạn đang xem: tấc là gì
General information
Unit system	Chinese unit
Unit of	length
Conversions
1 cun in ...	... is equal to tướng ...
metric (SI) units	1/30 m  ~33.33 mm
imperial/US units	~0.10936 ft  ~1.3123 in

Tsun
A section of an old Hong Kong ruler, showing the last (10th) cun of a chi. One can see that the chi in that jurisdiction was exactly equal to tướng 14+5/8 of an inch. A metric ruler is shown next to tướng it for comparison
General information
Unit system	Chinese unit
Unit of	length
Conversions
1 tsun in ...	... is equal to tướng ...
metric (SI) units	0.0371475 m  ~37.15 mm
imperial/US units	0.121875 ft  1+37/80 in

A cun (Chinese: 寸), often glossed as the Chinese inch, is a traditional Chinese unit of length. Its traditional measure is the width of a person's thumb at the knuckle, whereas the width of the two forefingers denotes 1.5 cun and the width of four fingers (except the thumb) side-by-side is 3 cuns.^[1] It continues to tướng be used to tướng chart acupuncture points on the human toàn thân, and, in various uses for traditional Chinese medicine.

The cun was part of a larger decimal system. A cun was made up of 10 fen, which depending on the period approximated lengths or widths of millet grains,^[2] and represented one-tenth of a chi ("Chinese foot").^[3] In time the lengths were standardized, although to tướng different values in different jurisdictions. (See chi (unit) for details.)

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In Hong Kong, using the traditional standard, it measures ~3.715 cm (~1.463 in) and is written "tsun".^[4] In the twentieth century in the Republic of Đài Loan Trung Quốc, the lengths were standardized to tướng fit with the metric system, and in current usage in People's Republic of Đài Loan Trung Quốc and Taiwan^{[citation needed]} it measures 3+1⁄3 cm (~1.312 in).

In nhật bản, the corresponding unit, sun (寸), was standardized at 1000⁄33 mm (~3.030 cm, ~1.193 in, or ~0.09942 ft).

See also[edit]

• shaku

References[edit]

External links[edit]

• Cun measurements