This was a very simple and sturdy vehicle which was constructed on a steel channel frame and fitted with a wooden cab, the early versions having canvas doors. The Mechanical Horse came in two sizes, capable of carrying loads of three tons and six tons. These were powered by Scammell&#x27;s own side valve petrol engine of 1125cc (3-ton) and 2043cc (6-ton), the engine being offset to the left of the cab. The vehicles are very manoeuvrable (with a 16 foot trailer they can turn through 360O in 19…