Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 43
celain insulatorsshould be placed not more than 4^ feetapart; and if the wires are liable to bedisturbed, the distance between supportsshould be shortened, particularly for smallconductors. If the beams are so farapart that supports cannot be obtainedevery 42- feet, it is necessaiy to provide… … Fig. 23. Elevation and Plan ofInsulators Held in Angle-Iron Frames. 28 ELECTRIC WIIIIXG 19
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Catalogue des monuments et inscriptions de l'Égypte antique / publié sous les auspices de S.A. Abbas II Helmi par la direction générale du Service des antiquités [de l'Égypte] ; par J. de Morgan, U. Bouriant, G. Legrain, G. Jéquier, A. Barsanti (1894)](https://img.insideoutlibrary.com/img/200/ia-cataloguedesmonu21egyp-161-267.webp)
