This is the Cranes Etc TV review of EMD's 1/50 scale model of the Ruston Bucyrus 22-RB configured as a Crane, Dragline and Grab. The model number is T003.1. The full review is on the Cranes Etc website: www.CranesEtc.co.uk.
That took me right back to being a kid again! My late father was a civil engineer in the late 1960's/early 1970's, and the company he worked for had several 22RB machines. Quite a lot of skill needed to operate them properly. Lovely model.
They are made by Preiser: www.cranesetc.co.uk/library/accessoryreviews/preiser/68214/68214review.htm Dealers sometimes stock them but they can be hard to find.