THREADS AND FEED'S (Metric Gearbox)
All the threads and feeds directly available from the gear
box are shown in the data plate fitted on the front. of the
gear-box. The setting of control levers is shown in bellow.
The B position of lever (Y) can provide a range of fine
threads; the A position a coarse thread range. Do not delect
the range (A position) at spindle speeds higher than 770 revmin