Pfauter P250 and P250S Gear Hobber. Manual
Pfauter Gear Hobber P250 and P250-S: Detailed Instruction and Maintenance Manual with an electrical schematic and three pages with tables and the titles "Index Change Gear Tables for Tooth Numbers from 8 to 100" and "Index Change Gears for Tooth Numbers of Workpiece from 102 to 200" and "Change Gear Table for Prime Number Spur Gears". Details of this model can be found here