STONE WALLWORK

Mechanical Variators was invented and designed by an Englishman between the first and the second world war. Stone Wall work (part of the Stone group-UK) was the first company in the world to manufacture mechanical variators / PIV gear boxes. During the sixties the Stone group quit and the company became Wallwork Gears Ltd... In the early 1970's a new design P.I.V. unit was developed known as Series 70 later known as ‘M' series. To signify a change to the metric standards.

Primary location: Watford United Kingdom