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The format was standardized in terms of dimensions and positions of mounting holes as EIA/ECA-740, co-published as SFF-8301. [34] SFF-8301 includes drive heights of 17.80, 26.10, and 42.00mm, but as of 2025, no drives are produced in 42mm height.
Leonardo da Vinci drew the Vitruvian Man within a square of side 1.83 m (6 ft 0 in) and a circle about 1.2 m (3 ft 11 in) in radius. To help compare different orders of magnitude, this section lists lengths between one meter and ten meters. Light, in vacuum, travels 1 meter in 1 ⁄ 299,792,458, or 3.3356409519815E-9 of a second.
An American football field, including both end zones, is 360 by 160 ft (120.0 by 53.3 yd; 109.7 by 48.8 m), or 57,600 square feet (5,350 m 2) (0.535 hectares or 1.32 acres). A Canadian football field is 65 yards (59 m) wide and 110 yards (100 m) long with end zones adding a combined 40 yards (37 m) to the length, making it 87,750 square feet ...
8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
In 2020, the National Institute of Standards and Technology announced that the U.S. survey foot would "be phased out" on 1 January 2023 and be superseded by the international foot (also known as the foot) equal to 0.3048 metres exactly, for all further applications. [48] This implies that the survey inch was replaced by the international inch.
In applications for which the R5 series provides a too fine graduation, the 1–2–5 series is sometimes used as a cruder alternative. It is effectively an E3 series rounded to one significant digit: … 0.1 0.2 0.5 1 2 5 10 20 50 100 200 500 1000 … This series covers a decade (1:10 ratio) in three steps. Adjacent values differ by factors 2 ...
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One cubic metre, one kilolitre or one stère—volume of a large domestic fridge-freezer (external dimensions) 3.85 × 10 1: External volume of a standard 20-foot ("TEU") cargo container, which has a capacity of 33.1 cubic metres 7.7 × 10 1: External volume of a standard 40-foot ("FEU") cargo container, which has a capacity of 67.5 cubic metres