Asquith OD1, OD2, OD3 and OD4 Radial Drilling Machines Mk.1 early versions: A large, complete Data Pack consisting of: Operator's Instruction and Maintenance Manual and Parts Manual (Sectional Drawing) with installation and foundation details and Electrical Schematics. Includes detailed and well-illustrated early and late Sales and Specification Catalogues that provide lots of useful extra details.