بوصة
البوصة وحدة قياس للطول وتعرف بالإنچ Inch, وهي وحدة قياس إنكليزية الأصل كانت تستخدم في إنكلترا ولا زالت تستخدم في الولايات المتحدة.
| بوصة | |
|---|---|
| نظام الوحدات | imperial/US units |
| وحدة قياس | length |
| الرمز | in or ″ (the double prime)[1] |
| التحويلات | |
| 1 in في ... | ... يساوي ... |
| imperial/US units | 1/36 yd 1/12 ft |
| metric (SI) units | 25.4 mm |
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الاستخدام
The inch is a commonly used customary unit of length in the United States,[2] Canada,[3][4] and the United Kingdom.[5] 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)[6] and may continue to be used as a secondary or supplementary indication following a metric measurement for other purposes.[5]
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.[7][8]
المماثلات
1 بوصة دولية تساوي:
- 10,000 tenths[أ]
- 1,000 thou[ب] or mil[ت]
- 100 points[ث] or gries[ج]
- 72 PostScript points
- 10,[ح][ج] 12,[خ] 16, or 40[د] lines
- 6 computer picas[ذ]
- 3 barleycorns[ر]
- 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[ز]
- 1/12 or 0.08333 feet
- 1/36 or 0.02777 yards
التاريخ
See also
- English units
- Square inch, Cubic inch, and Metric inch
- International yard and pound
- Anthropic units
- "Roman inch" (uncia) and "French inch" (pouce)
- Pyramid inch
- Digit and Line
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[9]
- ^ أ ب Part of John Locke's proposal for decimalization of English measures[10]
- ^ 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 ديسمبر 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 يناير 2018 – via Justice Laws Website.
- ^ "Weights and Measures Act". Canada. 1 أغسطس 2014. p. 2. Retrieved 18 ديسمبر 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).
- ^ أ ب "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 ديسمبر 2012. Retrieved 12 ديسمبر 2014.
- ^ "The Traffic Signs Regulations and General Directions 2002 - No. 3113 - Schedule 2 - Regulatory Signs". UK: The National Archives. 2002. Retrieved 25 أبريل 2013.
- ^ Flatchet, E; Petiet, J (1849). The student's guide to the locomotive engine. 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 يونيو 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)
- قالب:Dwelly
- Scottish National Dictionary and Dictionary of the Older Scottish Tongue