بوصة

بوصة
نظام الوحدات	imperial/US units
وحدة قياس	length
الرمز	in or ″ (the double prime)
التحويلات
1 in في ...	... يساوي ...
imperial/US units	1/36 yd; 1/12 ft
metric (SI) units	25.4 mm

البوصة وحدة قياس للطول وتعهد بالإنچ Inch, وهي وحدة قياس إنكليزية الأصل كانت تستخدم في إنكلترا ولا زالت تستخدم في الولايات المتحدة.

الاستخدام

The inch is a commonly used customary unit of length in the United States, Canada, and the United Kingdom. It is also used in Japan for electronic parts, especially display screens. In most of continental Europe, the inch is also used informally as a measure for display screens. For the United Kingdom, guidance on public sector use states that, since 1 October 1995, without time limit, the inch (along with the foot) is to be used as a primary unit for road signs and related measurements of distance (with the possible exception of clearance heights and widths) and may continue to be used as a secondary or supplementary indication following a metric measurement for other purposes.

The international standard symbol for inch is in (see ISO 31-1, Annex A) but traditionally the inch is denoted by a double prime, which is often approximated by double quotes, and the foot by a prime, which is often approximated by an apostrophe. For example, three feet two inches can be written as 3′ 2″. (This is akin to how the first and second "cuts" of the hour and degree are likewise indicated by prime and double prime symbols.)

Subdivisions of an inch are typically written using dyadic fractions with odd number numerators; for example, two and three eighths of an inch would be written as 2 3/8″ and not as 2.375″ nor as 2 6/16″. However for engineering purposes fractions are commonly given to three or four places of decimals and have been for many years.

Measuring tape calibrated in 32nds of an inch

المماثلات

1 بوصة دولية تساوي:

10,000 tenths
1,000 thou or mil
100 points or gries
72 PostScript points
10, 12, 16, or 40lines
6 computer picas
3 barleycorns
25.4 millimetres exactly (1 millimetre ≈ 0.03937008 inches.)
0.999998 US Survey inches
1/3 or 0.333 palms
1/4 or 0.25 hands
1/12 or 0.08333 feet
1/36 or 0.02777 yards

التاريخ

Mid-19th century tool for converting between different standards of the inch

Notes

^ Used in machining.
^ Used in machining and papermaking.
^ Formerly used in American English but now often avoided to prevent confusion with millimeters.
^ Used by the Australian Bureau of Meteorology for measuring rainfall until 1973
^ Part of John Locke's proposal for decimalization of English measures
^ Used in gunmaking.
^ Used in botany.
^ Used in button manufacturing.
^ Used in typography.
^ Used in American and British shoe sizes.
^ Used in measuring the height of horses.

References

Citations

^ Unicode Consortium (2019). "The Unicode Standard 12.1 — General Punctuation ❰ Range: 2000—206F ❱" (PDF). Unicode.org.
^ "Corpus of Contemporary American English". Brigham Young University. US. Retrieved 5 December 2011. lists 24,302 instances of inch(es) compared to 1548 instances of centimeter(s) and 1343 instances of millimeter(s).
^ "Weights and Measures Act" (PDF). Canada. 1985. p. 37. Retrieved 11 January 2018 – via Justice Laws Website.
^ "Weights and Measures Act". Canada. 1 August 2014. p. 2. Retrieved 18 December 2014 – via Justice Laws Website. Canadian units (5) The Canadian units of measurement are as set out and defined in Schedule II, and the symbols and abbreviations therefore are as added pursuant to subparagraph 6(1)(b)(ii).
^ "Guidance Note on the use of Metric Units of Measurement by the Public Sector" (PDF). UK: Department for Business Innovation and Skills. 2007. Archived from the original (PDF) on 12 December 2012. Retrieved 12 December 2014.
^ "The Traffic Signs Regulations and General Directions 2002 - No. 3113 - Schedule 2 - Regulatory Signs". UK: The National Archives. 2002. Retrieved 25 April 2013.
^ Flatchet, E; Petiet, J (1849). . John Williams and Co. p. xi. One Metre is equal to ... 30.371 inches"
^ Parkinson, A C (1967). Intermediate Engineering Drawing (sixth ed.). p. 11. The basic major dia is actually 1.309 in.
^ "Climate Data Online – definition of rainfall statistics". Australia: Bureau of Meteorology. Retrieved 10 June 2012.
^ Locke, John (1714), "Of Human Understanding", The Works of John Locke Esq., Vol. I', London: John Churchill, https://books.google.com.hk/books?id=3n8PAAAAQAAJ&printsec=frontcover .

Bibliography

Attenborough, F. L. (1922), The Laws of the Earliest English Kings (Llanerch Press Facsimile Reprint 2000 ed.), Cambridge: Cambridge University Press, ISBN 978-1-86143-101-1, https://archive.org/details/cu31924070153519, retrieved on 11 July 2018
Collins Encyclopedia of Scotland
Weights and Measures, by D. Richard Torrance, SAFHS, Edinburgh, 1996, ISBN 1-874722-09-9 (NB book focusses on Scottish weights and measures exclusively)
نطقب:Dwelly
Scottish National Dictionary and Dictionary of the Older Scottish Tongue