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.
A weighbridge (foreground) in Tanzania
A weigh bridge in a hump classification type of yard
Electronic indicator for the bridge shown above. This allows input of the vehicle empty weight and can compute and display the amount of material.
A full-size weighbridge
A scale or balance is a device used to measure weight or mass. These are also known as mass scales, weight scales, mass balances, and weight balances.
Balance scale set, with weights
Scales used to measure the weight of fruit in a supermarket
Digital kitchen scale, a strain gauge scale
Weighing scale for a baby includes a ruler for height measurement.