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 223
being 24 incheson centers and half-pitch, we have 24- 8 = 16. Take 16 and 16 on the square, which will givethe length of the longest jack on the short side.Thirty-four inches off gives the next jack, andso on. The sketch shows so clearly what ismeant that further description would seem to… … Fig. 165 THE STEEL SQUARE 221 at an angle of 450 with the eaves. Suppose theroof to be one-third pitch, or, in other words, tohave 8 inches rise to the foot; then take 8 incheson the tongue of the square and 12 inches onthe blade, and apply to the rafter as shown in
Carpenters' squares · Architecture, Domestic · Equerre de charpentier
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
