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 165
B, C, asshown in Fig. 120. Now draw a line equal to the long diameter, CD, and bisect itat right angles,and to these linesapply the straight-edge, as shown inFig. 121. Alwayskeeping BC onthe lines andmarking at A willdescribe the re-quired opening.FlGI22 The steeper the pitch the longer will be the…
Carpenters' squares · Architecture, Domestic · Equerre de charpentier
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