Cun (unit)

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Cun
Chinese name
Hanyu Pinyin
cùn
Wade–Gilests'un4
IPA[tsʰwə̂n]
Japanese nameKanji寸Kanaすん
Transcriptions
Revised Hepburnsun
Korean nameHangul치Hanjan/a
Transcriptions
Revised Romanizationchi
McCune–Reischauerch'i
Alternative Korean nameHangul촌Hanja寸
Transcriptions
Revised Romanizationchon
McCune–Reischauerch'on
Vietnamese nameVietnamese
thốn
Cun
Wooden ruler of the western Han dynasty, unearthed at Jinguan Pass Site in Jinta County
General information
Unit systemChinese unit
Unit oflength
Conversions
1 cun in ...... is equal to ...
   
US units
   ~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 ⁠14+5/8⁠ of an inch. A metric ruler is shown next to it for comparison.
General information
Unit systemChinese unit
Unit oflength
Conversions
1 tsun in ...... is equal to ...
   metric (SI) units   37.1475 mm
   imperial/US units   ⁠1+37/80⁠ in
Sun
Unit systemJapanese unit
Unit oflength
Conversions
1 sun in ...... is equal to ...
   metric (SI) units   1⁄33 m
~30.30 mm
   imperial/US units   ~1.1930 in

A cun (

acupuncture points on the human body, 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 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".

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), was standardized at 1000⁄33 mm (3.03 cm, ~1.193 in, or ~0.09942 ft).

See also

References

  1. ^ "TCM Student: Cun Measurements". www.tcmstudent.com. Retrieved 2018-02-10.
  2. ^ Chu, Feng-chieh. Binkley, Jim (ed.). "Yu-Ku-Chai: Vol 2, Chapter 3: Deliberations over Accurate Measurements". web.cecs.pdx.edu. https://web.cecs.pdx.edu/~jrb/chin/. Retrieved 2022-03-10.
  3. JSTOR 43290484
    .
  4. ^ Cap. 68 WEIGHTS AND MEASURES ORDINANCE
Look up 寸 or tsun in Wiktionary, the free dictionary.
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