Inch
Inch
Inch (Pronunciation: /ɪntʃ/) is a unit of length in the Imperial system and the United States customary units. It is equal to 1/12th of a foot and 1/36th of a yard. The term originates from the Latin word uncia, which was a unit of length in the Roman system of measurements.
History
The inch was originally defined in England during the Middle Ages as the length of three barleycorns. This was the legal definition for centuries, though it was later refined by various scientific methods. The current definition, equal to 25.4 millimeters, was adopted in 1959 by international agreement.
Usage
In the United States, the inch is commonly used in various fields, including manufacturing, construction, and transportation. It is also used in Canada and the United Kingdom for some purposes, though these countries have largely adopted the metric system.
Related Terms
- Foot: A unit of length equal to 12 inches.
- Yard: A unit of length equal to 3 feet or 36 inches.
- Mile: A unit of length equal to 5,280 feet or 63,360 inches.
- Millimeter: A unit of length in the metric system equal to 0.03937 inches.
- Centimeter: A unit of length in the metric system equal to 0.3937 inches.
- Meter: A unit of length in the metric system equal to 39.37 inches.
External links
- Medical encyclopedia article on Inch
- Wikipedia's article - Inch
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