WMW, VEB, Fritz Heckert, Saalfeld, Drills BS, BK and BKR 20 and 21 Drills Manual
WMW "Saalfeld", "Union", "VEB" Pillar Drilling Machine BS-20-A1, Box Column Drilling Machine BK-20-A1 and Gand Box Column Drilling Machines BKR-20 x 2 to 6-A1. Operator's Instruction and Maintenance Manual with some useful sectional parts drawings..