Parkson No. 1 as manufactured from the early 1950s onwards. Although all-new in terms of major castings, this model was almost the same mechanically as earlier versions. Electrical controls were much improved - a built-in motor drive now being standard - and, not before time, larger micrometer dials fitted.

Of lighter construction than that used on the Parkson No. 2 model the Short Lead and Feed Reducer was bolted to the end of table (shortening the travel by around 6 inches). The device contained gears with a 20 : 1 reduction that coupled to the table feed screw. The operator was thus able to move the table with great precision, if rather slowly. However, its main use was in conjunction with the power-driven dividing head (shown below), when it allowed screw threads or spirals of short single or multiple lead to be milled when the spindle had to make a complete revolution during a relatively short longitudinal movement of the table (so making the speed of cut far too high). By providing a very slow rate of table travel (the spindle, connected by changewheels to the feed screw still rotated at the same speed) it became possible to mill threads and spirals that would otherwise have been unobtainable - the intended range of leads being between 0.1 and 2 inches.