Ingar RA-6 and RA-6H Tool & Cutter Grinders. Manual Ingar RA-6 and RA-6H Universal Tool and Cutter Grinders. Operator's Hand book with Sectional Drawings of the whole machine and Electrical Schematics. Manufacturers: Ingar Models: RA-6 RA-6H Contents: Operators Manual Electrical Diagrams Technical Drawings