Inch

: Inches is also an album by Les Savy Fav.

International inch

Historically, the inch has referred to several slightly different units of length, used in different parts of the world. There was little uniformity; different countries, and even different cities within the same country, used their own standard length. The only "inch" still in use today is the English unit. Other countries, which previously had their own separate definitions of the inch, have converted to using the metric system instead. However, the inch remains a common and popular unit of measurement in the United Kingdom and in Canada, along with the mile, pound and others, despite official attempts to eradicate it. In the UK personal heights are expressed in feet and inches by people of all ages (except in official usage), but usage of the inch for other purposes is less frequent among younger people.

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The international inch is defined in terms of the metric system of units to be exactly 25.4 mm. This definition was agreed upon by the U.S. and countries of the British Commonwealth in 1958. Prior to that, the U.S. and Canada each had their own, slightly different, definition of the inch in terms of metric units, while the UK and other Commonwealth countries defined the inch in terms of the Imperial Standard Yard. The definition adopted was the Canadian definition. A metric inch was also used in some Soviet clones of Western computers. The clones were a slightly scaled-down copy, and hence Soviet parts did not match exactly with Western ones.

Related Topics:
Mm - British Commonwealth - 1958 - Imperial Standard Yard - Soviet clones

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