Nice action picture of the 'business end' of this Diamond T. The crane is 10 Ton TFL with extending fixed twin booms. This type of crane often had difficulty extend the jib under load and so were only
normally moved / adjusted offload and before actually lifting. The host had been a military ballast tractor and was eventually purchased and fitted out by L W Vass ltd of Bedford, in the sixties.
 
Photographed at BRS's North London Depot by John Harrington