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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

An illustration from 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, leaf 165
THE STEEL SQUARE 163 rise and pitch, and with one-half the diameterof the pipe as radius, with the pencil point rest-ing at 12, and center on the run, draw a semi-circle. Divide the diameter into any numberof spaces and through these, run lines at rightangles with the run from the circle to…

Carpenters' squares · Architecture, Domestic · Equerre de charpentier

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