Shown in the middle of the page displaying all Portass models this is completely unknown Model type and distinguished by a number of features all of which are at variance with normal Portass practice. The most unusual part of the design - and not just for this particular maker - was a changewheel arm carried on the end of a long shaft supported on a bracket extending from the end of the left-hand leadscrew hanger bearing. At its lower end this assembly was fitted with a dog clutch and, outboard of that, a single slot arm to carry the gears. As well as the inconvenience of making the lathe much longer than necessary the writer can see absolutely no benefit in this arrangement - and is puzzled as to why it was used. For a Portass, the cross-slide ways were unusually wide and the slots in the cross slide arranged in line with, instead of across, the bed. With the ability to take a 1.25-inch wide flat belt the headstock pulley was unusually robust, the tailstock quite unlike anything fitted to another Portass  - as was the bed, with its slotted feet and the lack of gap - whist the backgears and output gear on the end of the main spindle were of a much finer pitch than normally used.
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