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 190
t flat footand the line EC the plumb cut. This is quiteplain. The building may be any width, let ussay in this case, that it is 30 feet wide from Ato O. That will make the distance from A to C15 feet. A method of obtaining the bevels for thisrafter is given in Fig. 138 where the steel squareis… … Fig. 138 rafter AC, as shown both in Figs. 137 and 138.The line OP, Fig. 138 gives the bevel for the topof the rafter or the plumb cut, as most workmencall it. Now, there is nothing in this diagram,which is from Bells Carpentry, an excellentwork,—from which the workman can get thelength of his…
Carpenters' squares · Architecture, Domestic · Equerre de charpentier
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