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 (1903)
Hodgson, Fred. T. (Frederick Thomas), 1836-1919 · Riverside, Ill. : Radford Architectural Co. · leaf 146
Fig. S6 … 144 PRACTICAL USES OF gives corner of octagon, 17 and 611 makes thecorrect line. Fig. &7 shows how to lay off an octagon on theend of a timber. Lay the square on a linedrawn from corner to corner, a distance equal tohalf the width of timber, square over, and youhave one corner. Turn the square…
Carpenters' squares · Architecture, Domestic · Equerre de charpentier
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
