Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 30
ied by the first. If the two 45-degree angles coincide theyare accurate. Triangles are very convenient in drawing lines at rightangles to the T-square. The method of doing this is shown inI^ig. 10. Triangles are also used in drawing lines at an anglewitli the horizontal, by placing them on the… … Fig. 10. Fii-st place one of the triangles as shown at A, having one edgecoincidii,- with the given line. Now take the other triangle andplace one of its edges in contact ^yith the bottom edge of triangleA. Holding the triangle B firmly with the left hand the triangleA may be slipped along to the…
Architecture · Building · Carpentry
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
