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truck scale
A Truck scale (US), weighbridge (non-US) or railroad scale is a large set of scales, usually mounted permanently on a concrete foundation, that is used to weigh entire rail or road vehicles and their contents. By weighing the vehicle both empty and when loaded, the load carried by the vehicle can be calculated.
The key component that uses a weighbridge in order to make the weigh measurement is load cells.
== Weight certification in the United States ==
Commercial scales have to be National Type Evaluation Program (NTEP) approved or certified. The certification is issued by the National Conference on Weights and Measures (NCWM), in accordance to the National Institute of Standards and Technology (NIST), "Handbook 44" specifications and tolerances,〔(NTEP )- Retrieved 2011-09-17〕 through ''Conformity Assessment'' and the ''Verified Conformity Assessment Program'' (VCAP)〔(Conformity-assessment )- Retrieved 2011-09-17〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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