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 110
on the opposite side of the linejust drawn. If the square now exactly coincideswith the line and the board-edge, it is a perfectright angle. A great recommendation of thismethod is that an inaccuracy of the scale isdoubled by the reversing and somade more apparent. If the squareis not true it… … io8 PRACTICAL USES OF by the usual arithmetical process. The largestsize of carpenters bevel square placed under theframing square will answer in nearly every case,or any mechanic can make the bevel for himselfwith blades of steel obtained at a hardwarestore. The edge of each blade should be…
Carpenters' squares · Architecture, Domestic · Equerre de charpentier
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