A weighbridge is an industrial sized scales used to determine the quantity of material in a vehicle for charging purposes and can be adapted for either road or rail use. The general principle is that a vehicle is weighed when empty and again when full and the difference is the weight of the underlying material.

They are extensively used in the extractive industry, in the milling industry and anywhere it is common to sell material by the tonne.  They are also used to determine motor taxation for certain commercial vehicles, with recognised weighbridges designated for this purpose.

Whilst modern weighbridges tend to be functional in design, historically, weighbridges were ornate structures, usually of metal construction, with the manufacturers name cast therein. A weighbridge will usually be accompanied by an associated building which contains the equipment for reading the weighbridge output.

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