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1. en.wikipedia.org › wiki › List_of_unusual_units_of_measurementList of unusual units of measurement - Wikipedia

   en.wikipedia.org › wiki › List_of_unusual_units_of_measurement

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   5 godz. temu · One rack unit (U) is 1.75 inches (44.45 mm) and is used to measure rack-mountable audiovisual, computing and industrial equipment. Rack units are typically denoted without a space between the number of units and the 'U'. Thus, a 4U server enclosure (case) is seven inches (177.8 mm) high, or more practically, built to occupy a vertical space seven inches high, with sufficient clearance to allow ...