Material is held in an ordinary collet is moved backwards slightly when the collet tightens on it - the Wade Stator Collet" was designed to overcome this limitation to precise shoulder-length setting by holding the work stationary.
A master collet C held the Stator Collet A -  which was also restrained from moving by a spindle nose cap B. The lathe could be changed from standard to Stator Collets in less than one minute.

Another method on controlling precise shoulder length when using collets was provided by the Wade "Collet Stop" assembly. A long rod, held immovable in the spindle by an fastening incorporated within the draw bar tube, protruded into the collet and carried on its end a replaceable "pad". The pads were supplied in two diameters of solid material, and another incorporating a spring for quick work ejection. Different pads could easily be made and fitted by the user.