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In civil engineering, clearance refers to the difference between the loading gauge and the structure gauge in the case of railroad cars or trams, or the difference between the size of any vehicle and the width/height of doors, the width/height of an overpass or the diameter of a tunnel as well as the air draft under a bridge, the width of a ...
The American Measurement Standard. ISBN 978-0-578-00244-6. Size Matters-Residential Square Footage. ISBN 978-1500866075 and; How to Measure a House. ISBN 978-1456491987. Realtor Magazine. "In Search of A Standard." September 2008. Approved for use by the Mississippi Appraisal Board. January 2019.
A football field is often used as a comparative measurement of length when talking about distances that may be hard to comprehend when stated in terms of standard units. An American football field is usually understood to be 100 yards (91 m) long, though it is technically 120 yards (110 m) when including the two 10 yd (9.1 m) long end zones ...
Length measurement, distance measurement, or range measurement (ranging) all refer to the many ways in which length, distance, or range can be measured. The most commonly used approaches are the rulers, followed by transit-time methods and the interferometer methods based upon the speed of light .
Width across flats is the distance between two parallel surfaces on the head of a screw, bolt or nut. The width across flats will define the size of the spanner or wrench needed. The width across flats will define the size of the spanner or wrench needed.
The minimum width of a hallway is governed by building codes. Minimum widths in residences are 36 inches (910 mm) in the United States. [ 2 ] Hallways are wider in higher-traffic settings, such as schools [ 3 ] and hospitals.
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Measurements are often expressed as a size relative to a theoretically perfect part that has its geometry defined in a print or computer model. A print is a blueprint illustrating the defined geometry of a part and its features. Each feature can have a size, a distance from other features, and an allowed tolerance set for each element.