Taylor Hobson: a collection of individual Sales and Technical Specification Catalogues that cover the entire range of post 1930 Pantograph Engravers as made until the 1970s:

Taylor Hobson "Model JH" Engraving Machine. Operator's Manual. Includes a 32-page Taylor Hobson Accessories Catalogue (including cutter grinders) that not only illustrate the various items but give useful details of their functions.