Manufacturers of a wide range of machine tools - grinders, power presses, hacksaws, slotters, milling machines, shapers and a wide range of engineering accessories - the Machines  & Tools Corporation of Lentin Chambers, Dalal Street, Mumbai, sold their products under the "Coronet" label. During the 1960s and 1970s the lathes they offered were in capstan and centre types, the former though to be licence-built copies of a German design, but the latter of their own conception, being backgeared and screwcutting and of conventional design and construction.
Offered in several models: 140 mm x 558 mm, 160 mm  x 685 mm and 180 mm x 685 mm, all were of identical design and construction - but sized correctly to handle their work capacity with the beds having widths of, respectively|: 180 mm, 196 and 230 mm. Following a fashion that had died out by the 1960s, the V and flat-way bed had the front V constructed with a much wider outside surface set at a shallow angle (to better absorb wear) and a much narrower but steeper inner surface to take the tool thrust - a gap being offered as an option on all  types.
Headstocks were also specific to the model and suitably beefed up in the larger sizes - the spindle bore of the smallest version being 25 mm (with 12 speeds) and 28 mm (with 16 speeds) on the two larger. Motors varied in power but were generally rather too small, being 0.75 h.p. on the two smaller models and 1 h.p. on the largest , all of which gave a speed range from approximately 45 to 1440 r.p.m.. However, over the years the specification appears to have changed, with early versions all being restricted to just 8 speeds, though with the same range.
Screwcutting was by the usual type of Norton quick-change gearbox with drive from the headstock through an externally-mounted tumble-reverse mechanism (most lathes of this size having long moved to a better supported arrangement on the inside face of the headstock). Power sliding and surfacing feeds were driven from a keyway in the leadscrew with engagement by a lever protruding from a gated slot the apron's right-hand face.