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 157
Fig. no trated in Fig. no, reverse the square and it is completed. Fig. in. To make anoval, begin same as onellipse, swing around onthe one brad, which willmake a circle at thelarge end, and it isFig. in formed as illustrated. Fig. ii2. To bend a board for a circle, if the
Carpenters' squares · Architecture, Domestic · Equerre de charpentier
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