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 27
Fig. 14, Triangles. The blade may be permanently fastened to thehead, or the head may be provided with a clampso as to be adjustable. For a right-handed draftsman using the T-square against the left-hand side of the board,the upper edge of the blade is the working edge,as shown in Fig. 13. A good…
Architecture · Building
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
