Besides the rather frail-looking treadle lathes, Barnes also made this much more substantial and serious 18-inch "Engine" lathe - or, in British terminology, "BGSC" for Back-Geared and Screw-Cutting.
The sliding control to vary the power sliding and surfacing feeds can be clearly seen at the bottom of the apron and the bed is obviously of much deeper section and was cast with box braces between the walls. The bed ways extended to almost the centre of the headstock assembly, which allowed the compound slide rest to be well supported in the middle of the saddle.
The forged, crucible-steel spindle was bored through 15/8", carried a No.3 Morse taper and ran in phosphor bronze boxes which were adjustable for wear.
The saddle wings carried long T slots so that it could act as a boring table - whilst offering alternative locations for the toolpost when unusually difficult or complex jobs had to be tackled.
Screwcutting was exclusively by steel changewheels - no gearbox being on the options' list - with threads from 1 to 56 tpi available from the standard set of 18 gears.