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.

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.