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 155
THE STEEL SQUARE 153 plate to given point to allow the squaring up ofheel as illustrated; and also remember to allowfor ridge whenever one is used.
Carpenters' squares · Architecture, Domestic · Equerre de charpentier
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