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 196
ntfrom which to remove the wood back to thecenter line of hip, and the measurement fromthe edge of the rafter taken vertically down tothe gauge point set off on the plumb cut regu-lates how far apart the parallel lines of the seat THE STEEL SQUARE i93 cuts will be under the above conditions.… … Fig. 143 Fig. 143 illustrates side cut of the jack, 12 onthe tongue, and 15 (length of the commonrafter) on the blade.
Carpenters' squares · Architecture, Domestic · Equerre de charpentier
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