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In Texas, a vara was defined as 33 + 1 ⁄ 3 inches (846.67 mm), or 1 yard = 1.08 vara. [citation needed] The vara and the corresponding unit of area, the square vara, were introduced in the 19th century to measure Spanish land grants. Stephen F. Austin's early surveying contracts required that he use the vara as a standard unit.
A number of units were used. One libra (lit. "pound") was equal to 0.460 246 34 kg as it was legally defined. [1] Some other units and legal equivalents are given below: 1 tomin = 1 ⁄ 768 libra 1 adarme = 1 ⁄ 256 libra 1 ochava ("eighth") = 1 ⁄ 128 libra 1 onza ("ounce") = 1 ⁄ 16 libra 1 arroba = 25 libras 1 quintal ("hundredweight ...
Legua nautica (nautical league): Between 1400 and 1600 the Spanish nautical league was equal to four Roman miles of 4,842 feet, making it 19,368 feet (5,903 metres or 3.1876 modern nautical miles). However, the accepted number of Spanish nautical leagues to a degree varied between 14 1/6 to 16 2/3, so in actual practice the length of a Spanish ...
The yard (symbol: yd) [3] [4] is an English unit of length in both the British imperial and US customary systems of measurement equalling 3 feet or 36 inches. Since 1959 it has been by international agreement standardized as exactly 0.9144 meter. A distance of 1,760 yards is equal to 1 mile. The US survey yard is very slightly longer.
The international yard and pound agreement of July 1959 defined the length of the international yard in the United States and countries of the Commonwealth of Nations as exactly 0.9144 meters. Consequently, since a foot is one third of a yard, the international foot is defined to be equal to exactly 0.3048 meters.
The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. In British imperial and US customary units, it is defined as 16 + 1 ⁄ 2 feet, equal to exactly 1 ⁄ 320 of a mile, or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain), and is exactly 5.0292 meters.
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According to that agreement, the international yard equals 0.9144 meters and the international pound equals 0.45359237 kilograms. [1] The international yard was about two millionths of a meter longer than the imperial yard, while the international pound was about six ten-millionths of a kilogram lighter than the imperial pound. [13] The metric ...