MAAG HSS-60-BC Gear Grinding Machine. Detailed Operator's Instruction Manual in English. The manual includes other information including a foundation plan and several electrical schematics for the HSS60 and HSS60/80 and: "Operating Components of the electrical and hydraulic control devices of the HSS-30, HSS30X, HSS10, HSS60 and HSS 60/80" and: "Troubles in the hydraulic control line'; Indexing Cylinder of the HSS10, HSS30, HSS60 and 60/80; control devices for the fast speed of the HSS10, HSS30, SS30, and HSS60 and HSS60/80." The original manuals were bound in 4-clip folders to allow the makers to add pages as required for a particular machine. This manual consists of two bound editions with some duplicated data: The second edition has more machine technical data, general gear formulas, instructions for crowning devices, examples of calculations, charts of pressure angles and lots of helpful additional information about gear grinding.