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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 197

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 197
Fig. 144 Fig. 144 illustrates side cut of the octagonjack, 5 on the tongue and 15 on the blade. i94 PRACTICAL USES OF Fig. 145 illustrates the side cut of the hip orvalley, 17 on tongue, 19X (length of the hip) onthe blade giving the cut in each case. … Fig. 145 The latter, however, is for the unbacked rafter.If it has been previously backed, then apply thesquare with the above figures on the lower edgeat bottom of the plumb cut, or apply the squareas for the jack, Fig. 144, to the backing line,which will give the same result as 17 and 19%. It is…

Carpenters' squares · Architecture, Domestic · Equerre de charpentier

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