Wagon Turntable KitPECO Streamline SM 32 CODE 200 Wagon Turntable Wagon Turntables were usually used to turn wagons through 90 degrees to access spur roads into warehouses etc. A popular size especially in the garden, SM 32 models are built to a scale of 16mm foot and run on a gauge of 32mm, the equivalent of a two foot gauge railway. SM 32 has become the first choice for many narrow gauge enthusiasts who want to operate live steam locomotives by radio control, the