HUELLER Ultromat TAPPING MACHINES UG1, UG2, UG3, UG4 and UG5 (also badged as "BSA" and "Hahn and Klob"): Operator's Instruction and Maintenance Manual with Electrical Schematics.

Huller "Ultromat" Tapping Machines UG8, UG20 and UG36 (Hahn and Klob): Operator's Instruction and Maintenance Manual with Parts as Sectional Drawings and Electrical Schematics.