Heckert (Union - WMW) BR 40 x 1250 Radial Arm Drill (also badged as the VEB, Union, Bowes and AMK). Basic Operating Manual with Parts Repair Manual as Sectional Drawings and Photographs.

WMW, Union, VEB and Saalfeld: BS, BK and BKR Series Drills BS-25, BK-25 and BKR x 2 to 6
Pillar, Box Column and Gang Column Drilling Machines. Operation and Maintenance Manual with an Electrical Schematic and some useful Sectional Drawings.