India_Delhi Museum_PSMT (2): A view from the other side shows the three coupled driving wheels, the outer ones being double-flanged, the centre flangeless. Note also that the locomotive’s right-hand water tank is much larger, so that the weight of the water balances the machine onto the outrigger. 11 December 1979. Colour slide and scan by Roger Griffiths. roger.griffiths@hotmail.com