Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 326
e closely inspected forflaws and for crookedness or too great departure from a straight line.Where appearance is of considerable importance, octagonal polesmay be used, although these cost considerably more tlmn round poles.Gains or notches for the cross-arms should be cut in the poles beforethey… … Fig. 6J. Cut-Out Panel with Push-Button Switches. With Cover. nor less than v inch deep. Gains should not be placed closer than 24inches between centers, and the top gains should be at least 9 inchesfrom the apex of the pole. 272 ELECTRIC BELL WIRING. In wiring for electric bells to be operated by…
Architecture · Building · Carpentry
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
