Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work (1909)
Johnson, Alfred Sidney, 1860-, Radford, William A., 1865- · Chicago Radford Architectural Co · leaf 162
cumscribe a square about thecircle, with the sides respectively parallel andperpendicular to a T-square line. As this is a MECHANICAL DEAFTING 135 plaia of the cylinder, the sides of the square willbe 30-degree lines in isometric. Let 0 be placed at 0, and the isometricsquare drawn. The circle of…
Architecture · Building
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.