Both the T and TUD plain-turning training lathes were dimensionally identical to the more highly specified models and used the same basic castings; however, they lacked any form of screwcutting, power feed and, more often than not, backgear. The rear drive system usually gave 4 speeds from around 200 to 1200 r.p.m. - although the writer has seen examples with 2-step pulleys on motor and countershaft to give 8. The under-drive models had 5 direct-drive speeds of 210, 340, 540, 850 and 1400 r.p.m. or, with backgear fitted, an additional 5 slower speeds. The development of the training lathes mirrored that of the more highly specified versions changing from rear to under-drive and then incorporating the other small improvements already described. The last versions were of 5-inch centre height and mounted on a version of the more modern-looking stand - and even complete with the splash back, chuck guard and halogen light unit. Although an attractive proposition, because of their low price, the plain-turning versions are of limited use other than in a training role, for the very simplest of work or as a back-up lathe for roughing out. Can they be converted to full-specification machines? I do known one person who managed it, but he enjoyed the unfair advantage of working night shifts at the Rolls-Royce aero-engine factory in Derby and had access to, shall we say, a rather comprehensive range of workshop facilities. In other words, the conversion is possible, but not even worth considering - unless you can find all the missing bits and enjoy the range of skills necessary to make the most a full range of turning, milling, grinding, boring and fitting facilities..