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In both customary and imperial units, one foot comprises 12 inches, and one yard comprises three feet. Since an international agreement in 1959, the foot is defined as equal to exactly 0.3048 meters. Historically, the "foot" was a part of many local systems of units, including the Greek, Roman, Chinese, French, and English systems. It varied in ...
The United States adopted the conversion factor 1 metre = 39.37 inches by an act in 1866. [30] In 1893, Mendenhall ordered the physical realization of the inch to be based on the international prototype metres numbers 21 and 27, which had been received from the CGPM , together with the previously adopted conversion factor.
The hands value has at most one digit after the decimal mark, and has an optional fraction. A precision of 2 assumes |frac=2 (round to nearest 1 ⁄ 2 inch). A precision of 3 or more assumes |frac=4 (round to nearest 1 ⁄ 4 inch).
A fraction is applied to the output unit (if there is only one), or to non-SI units (if using a combination), except that if a precision is also specified, the fraction only applies to the hand unit. {{convert|18.45|in|m|frac=2}} → 18.45 inches ( 1 ⁄ 2 m)
There are anecdotal objections to the use of metric units in carpentry and the building trades, on the basis that it is easier to remember an integer number of inches plus a fraction, rather than a measurement in millimeters, [9] or that foot-inch measurements are more suitable when distances are frequently divided into halves, thirds, and ...
By {{Convert}} default, the conversion result will be rounded either to precision comparable to that of the input value (the number of digits after the decimal point—or the negative of the number of non-significant zeroes before the point—is increased by one if the conversion is a multiplication by a number between 0.02 and 0.2, remains the ...
There are 12 inches in an imperial foot, 12 ... fraction Fraction name 1; one 1 10; unqua 12 ... one can use digit-conversion tables. The ones provided below can be ...
In the late 13th century, the modern foot of 304.8 mm was introduced, equal to exactly 10 ⁄ 11 Anglo-Saxon foot. Cubit: 457.2 mm: From fingertips to elbow, 18 inches. Yard: 0.914 m: 3 feet = 36 inches, the practical base unit, defined as the length of the prototype bar held by the Crown or Exchequer. Ell: 1.143 m