Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 336
itch-board in some form or other. Properly speaking,a pitch-board, as already explained, is a thin piece of material,generally pine or sheet metal, and is a right-angled triangle in outline.One of its sides is made the exact height of the rise; at right angleswith this line of rise, the exact width… … Fig. 13. Steel Square Used as a Pitch Board in Laying Out Stair String. square, which, of course, every carpenter in this country is supposed to possess. By means of this invaluable tool, also, a stair string can be laid out, the square being applied to the string as shown in Fig. 13. In the…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
