A practical treatise on the steel square and its application to everyday use : being an exhaustive collection of steel square problems and solutions, "old and new", with many original and useful additions, forming a complete encyclopedia of steel square knowledge, together with a brief history of the square, and description of tables, keys and other aids and attachments
A carpenter's trade manual by Fred T. Hodgson, published in Riverside, Illinois, in 1903 for builders and joiners learning to lay out cuts with the steel square. The 178 line engravings are spare geometric diagrams: lettered construction lines, dashed arcs, hatched timbers, roof trusses and stair strings, useful as ready-made abstract compositions and technical lettering references.
