CAV Precision Toolroom Lathe. Operation, Maintenance and Sales & Specification Catalogues. Three manuals in one: early and late editions and an additional, simpler edition - almost certainly the complete set published by CVA that covers all types.
Also included is a comprehensive 41-page set of CVA Sales & Technical Specification literature.
The manuals contain, among other things, highly detailed and comprehensive screwcutting instructions and charts (the latter enlarged from the too-small original), Installation instructions, Lubrication requirements and oil types from different makers (of the period), operation Instructions, basic adjustments, general descriptions, detailed specification, electrical equipment, wiring diagram, Additional Equipment, Special Equipment, annotated photographs of the controls, etc.
As well as this manual, two others are available, shown below: a Complete Data Pack with all literature and Parts Manual