VDF (Gebruder Boehringer) S355 and S400 Lathes (also covers the larger but identical S450 and S500 versions). Operating and basic maintenance Manual. Includes instructions for adjusting the clutch, spindle bearings, electro-magnetic brake, dismantling the quick-action unit, and reproductions of the screwcutting charts and how to use the complicated thread-dial indicator.

VDF All-models catalogue dated 1951 showing lathes, planing machines, bevel gear generators, Boehringer-Sturm Hydraulic drive units and factory Views.