LSWR/SR 12 Ton Machinery truck SR Dia 1674 Unfitted. LSWR/SR 12 Ton Machinery Truck. SR No’s 61010 61014-18 Our kit is a 3D printed Body with separate Axle boxes & brake leaver. Needing 2’8’’ (4mm scale 10.5mm) Wheels, couplings & buffer to complete.