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12 in. Metric ( SI) units. 0.3048 m. 30.48 cm. 304.8 mm. The foot (standard symbol: ft) [1] [2] is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, ′, is commonly used to represent the foot. [3] In both customary and imperial units, one foot comprises 12 inches, and one yard ...
A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement. It is equal to 1 36 yard or 1 12 of a foot. Derived from the Roman uncia ("twelfth"), the word inch is also sometimes used to translate similar units in other ...
Length. For measuring length, the U.S. customary system uses the inch, foot, yard, and mile, which are the only four customary length measurements in everyday use. From 1893, the foot was legally defined as exactly 1200⁄3937 m (approximately 0.304 8006 m ). [13] Since July 1, 1959, the units of length have been defined on the basis of 1 yd ...
Bangladesh Railways uses a mix of 1,676 mm ( 5 ft 6 in) broad gauge and metre gauge. The broad gauge network is primarily located to the west of the Jamuna River, while the metre gauge network is primarily located to its east. The Jamuna Bridge is a mixed-use bridge that contains a dual gauge connection across the river linking both networks.
Tolerances. Finland allows its gauge to be 1,520–1,529 mm on first class lines (classes 1AA and 1A, speed 220–160 km/h). [17] If the rolling stock's tolerance is kept within certain limits, through running between 1,520 mm ( 4 ft 1127⁄32 in) railways and Finnish 1,524 mm ( 5 ft) railways is allowed.
The second-tallest unsuccessful candidate is John Kerry, at 6 ft 4 in (193 cm). The shortest unsuccessful presidential candidate is Stephen A. Douglas, at 5 ft 4 in (163 cm). The next shortest is Hillary Clinton, who lost the 2016 election and is 5 ft 5 in (165 cm). The largest height difference between two presidential candidates (out of the ...
All other railways use 1,668 mm (5 ft 5 + 21 ⁄ 32 in) (broad gauge); some use 1,000 mm (3 ft 3 + 3 ⁄ 8 in) metre gauge; Decauville uses 500 mm (19 + 3 ⁄ 4 in) gauge. Planned and under construction high-speed railways to use 1,668 mm ( 5 ft 5 + 21 ⁄ 32 in ) to maintain interoperability with the rest of the network.
These lengths typically ranged from 44.4 to 52.92 cm (1 ft 5 + 1 ⁄ 2 in to 1 ft 8 + 13 ⁄ 16 in), with an ancient Roman cubit being as long as 120 cm (3 ft 11 in). Cubits of various lengths were employed in many parts of the world in antiquity, during the Middle Ages and as recently as early modern times.