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Cun (unit)








Cun (unit)


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Cun
Chinese name
Chinese
寸





Japanese name
Kanji
寸
Kana
すん



Korean name
Hangul
치
Hanja
n/a





Alternate Korean name
Hangul
촌
Hanja
寸















Cun

Wooden Ruler.jpg
Wooden ruler of the western Han dynasty, unearthed at Jinguan Pass Site in Jinta County

Unit information
Unit system
Chinese unit
Unit of
length
Unit conversions
1 cun in ...... is equal to ...


   metric (SI) units

   1/30 m
 ~33.33 mm

   imperial/US units

   ~0.10936 ft
 ~1.3123 in










Tsun

Hong Kong ruler close-up 002.jpg
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 14 5/8 of an inch. A metric ruler is shown next to it for comparison

Unit information
Unit system
Chinese unit
Unit of
length
Unit conversions
1 tsun in ...... is equal to ...


   metric (SI) units

   6998371475000000000♠0.0371475 m
 ~37.15 mm

   imperial/US units

   0.121875 ft
 1 37/80 in










Sun
Unit system
Japanese unit
Unit of
length
Unit conversions
1 sun in ...... is equal to ...


   metric (SI) units

   ​1⁄33 m
 ~30.30 mm

   imperial/US units

   ~0.099419 ft
 ~1.1930 in

The cun (Chinese: 寸; pinyin: cùn; Wade–Giles: ts'un; Japanese: sun; Korean: chon), 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 three cuns.[1] In this sense it continues to be used to chart acupuncture points on the human body in various uses of traditional Chinese medicine.


The cun was part of a larger system, and represented one-tenth of a chi ("Chinese foot"). In time the lengths were standardized, although to different values in different jurisdictions. (See chi (unit) for details.)


In Hong Kong, using the traditional standard, it measures ~3.715 cm (~1.463 in) and is written "tsun".[2] In the twentieth century in the Republic of China, the lengths were standardized to fit with the metric system, and in current usage in People's Republic of China and Taiwan[citation needed] it measures ​3 1⁄3 cm (~1.312 in).


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




See also[edit]


  • shaku


References[edit]




  1. ^ "TCM Student: Cun Measurements". www.tcmstudent.com. Retrieved 2018-02-10..mw-parser-output cite.citationfont-style:inherit.mw-parser-output qquotes:"""""""'""'".mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em


  2. ^ Cap. 68 WEIGHTS AND MEASURES ORDINANCE




External links[edit]




  • Cun measurements








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