One of the fundamental aspects of safety on the railway was that wagons should never be overloaded. To do so would risk trains not having sufficient braking capacity to slow and stop safely. To manage loading at many industrial locations, each wagon would pass over a Weighbridge - to check their weight. Each wagon would display its tare weight, which could be deducted from the total weight, to ascertain the net weight of the load - simple mathematics! The new Ratio kit is a great representation of a typical Weighbridge, not dissimilar to the one, once located at Shildon Wagon Works in the North East. Combining a mixture of materials, the plastic parts make up the hut and laser-cut wood parts form the actual weighing scales, which fit in and around a length of ST-201 PECO Setrack track, included in the kit.