Rigiva (Riva) "UO-A" Miller Basic Manual, Dimensions, Electrical Diagram and Spindle section ITALIAN TEXT. This publication is issued together with the comprehensive English-language publication "Handbook for Milling Operations" - as shown below,
Rigiva "manuals" tended to be skimpy affairs with the company producing one general guide (reference MR391C) and then individual leaflets coverings specifics for each machine to cover such as shear-pin replacement, lubrication points, etc.
Manuals and Catalogues
Rigiva (Riva) V6 Miller: Basic Installation, Lubrication and Shear Pin Replacement Instructions.
Rigiva (Riva) U6 and U8 Milling Machines. Instruction Manual with spindle-adjustment data, lubrication, shear pin details, wiring.
Rigiva (Riva) "Handbook For Milling Operations" Comprehensive 100-page well-illustrated General Operator's Guide For Rigiva Millers. Contains detailed instructions concerning the operation of ordinary processes as well as how to use many of the more complex accessories: Dividing Heads, Bevel Gear Cutting, Universal Dividing Head, Plain and Differential Indexing, Milling Spiral cams, Hob Milling, Cam Plate and Drum Milling, Automatic Cycle settings, etc.
Rigiva (Riva) Universal Dividing Head. Manual and 36 pages of tables.