Emco Unimat PC "Basic"  2.1" x 7.6"  (54 mm x 194 mm).
The PC was a beautifully integrated design, with very rigid, large-diameter bed bars and variable-speed drive; the latter, combined with a three-step drive by toothed belts that could be arranged to drive the spindle directly or though an intermediate pulley set, gave three speed ranges: 20 to 300 rpm, 300 to 1200 rpm and 1200 to 2200 rpm. The motor - happily a switchable 115 volt/230 volt and dual 50/60 Hz unit - was confusingly referred to by the makers as having a maximum "absorbed power" of 80W, a "maximum power output" of 50 watts and a "continuously absorbed power" of 60 watts. Whatever the output, it was only just adequate.  At the back of the lathe can be seen the electrical control box - a detachable unit.
The spindle, with a bore of 12.2 mm was threaded M14 x 1 - as was the tailstock barrel in order to mount screw-on chucks and rotating centres - there being no Morse-taper fitting.
This lathe was available, like others in the Emco range, with a computer control system running on a standard PC; a kit was offered, containing two stepper motors, a power pack and drive belts, to make this conversion possible.
Unfortunately, it was very expensive and, compared to previous small Emco lathes, relatively few were sold. Of all the miniature Emco lathes this is almost certainly the best you can buy but, because of their rarity, and the inclination of owners to hang on to them, they are very hard to find.

Unimat PC with Computer Control conversion parts fitted. The kit consisted of a power pack, stepper motors, belts and controller.

The rarely-found powered vertical milling and drilling head for the 5 PC.
The throat was 70 mm, the working stroke 126 mm and the column diameter 35 mm. The motor (and the speed range) were of exactly the same specification as that fitted to the lathe. The drive was by a wide toothed belt that could be arranged to drive the spindle either directly or via a secondary pulley to give lower speeds and greater torque

Drive system of the hard-to-find Emco PC vertical milling head

The motor was a variable-speed type that, combined with a three-step drive by toothed belts (that could be arranged to drive the spindle directly or though an intermediate pulley set) gave three speed ranges, these being: 130 to 300 rpm, 300 to 1200 rpm and 1200 to 2200 rpm a. The motor - happily a switchable 115 volt/230 volt and dual 50/60 Hz unit - was confusingly referred to by the makers as having a maximum "absorbed power" of 80W, a "maximum power output" of 50 watts and a "continuously absorbed power" of 60 watts. Whatever the output, it was only just adequate.  At the back of the lathe can be seen the electrical control box - a detachable unit. Drive to the carriage was by plastic changewheels.