British Federal Motor Driven Stitch Welder. Operating Instructions (2 set) with S4SW/1 Sequence-weld timer and ignition contactor ICBC/1 and the Maker's Sales and Specification Folders.

British Federal Pneumatically Operated Spot Welder. Operating Manual (2 set) with a separate manual for the Type S4SW/1 Sequence-weld Timer and another for the Ignition Contactor Type ICBC/1.