Changewheel drive to leadscrew. This lathe is shown with the extra stud in place (behind the spindle line) to generate left-hand threads (the carriage being caused to move towards the tailstock)

Backgear assembly. The Allen screw through the face of the bull wheel is used to lock a claw fastener into the teeth of the small gear protruding through the pulley

On the 4th of May 1979 a modified "two-speed" countershaft unit was introduced that carried an eccentrically-mounted top shaft, with a double-step V-belt pulley drive from the motor; this doubled the number of speeds to twelve (of which ten were officially sanctioned as safe to use) with a range from 48 to 2000 r.p.m.

A rather different version of the Myford ML10 possibly with a geared headstock The lathe was recovered from the factory during 2011 and nothing is  known of the machine's history - but it may have been an experimental model or even knocked up from odds and ends to use in the workshop