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 117
lay the squareon same with the 11-inch mark on the blade andthe 8rj inch on the tongue coinciding with theedge of the board. Now take a fine pencil, orbetter still, a knife, and mark by these on edgeof the board the distance between these points13T? inches, which equals 13 feet 9 inches, whichis… … Fig. 68 THE STEEL SQUARE 5 8iVinch mark and measure back from this markhalf the thickness of the ridge. This is length.Fig. 68 shows section of roof with the square laidon. To get the bevel of collar joist take the runon the blade 11 inches, and the rise on the tongueSts inches. The blade gives the…
Carpenters' squares · Architecture, Domestic · Equerre de charpentier
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