Studer RHU-650 Cylindrical Grinder: Massive and detailed Operating and Maintenance Manual with Sectional Drawings, Installation Instructions, Fault Finding, Grinding Technology,  Electrical Diagrams and Accessories.

Zocca Surface Grinders. Not a manual but a useful technical sales catalogue with details of the 500, 650, 850, 1100 models. Well illustrated and showing many unusual and complex operations.

Robling 650 and 850 Lathes. Operator's Instruction and Maintenance Manual - German text. Includes a (reasonable) copy of the maker's Sales and Specification Catalogue.

Seba (Spain) Shapers Models: 450, 500, 550, 600, 650, 750, 850 and 1000. Illustrated Parts Manual.