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 193
& of 24 is 9, which rep- 190 PRACTICAL USES OP resents the rise to the foot run. Then 12 and 9give the seat and plumb cuts for the commonrafter, 13 and 9 for the octagon hip or valley, and17 and 9 gives the same for the common hip orvalley. In Fig. 141 I show each separately. … Fig. 141 The measurement line of hips and valleys is ata line along the center of its back, and justwhere to place the square on the side of therafter so as to make the cuts and length comeright at that point is a question that taxes theskill of most carpenters, especially so when therafters are so…
Carpenters' squares · Architecture, Domestic · Equerre de charpentier
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