Elementary telegraphy : a manual for students; written specially to meet the requirements of the ordinary grade of the subject as published in the syllabus of the city and guilds of London Institute (1910)
Pendry, H. W. (Henry Walter) · London ; New York : Whittaker & Co. · leaf 57
d tape- coiled 46 ELEMENTARY TULEJGBAPHY into rosettes is pressed into holes in the grid, these being-cast countersunk on Tooth sides for the purpose. Therosettes are expanded slightly during the manufacture ofthe plate, thus being securely fixed in the grid, and as theacid can pass i-ight throiigh… … Fn;. 23.—Chloride negative plate. usual design, the frame being made in two halves rivetedtogether after the insertion of the active material, which isthus contained in a series of small cage compartments orboxes. It will be noticed from the illustration (Fig. 23) thatthe outside of the plate is a…
Telegraph
Internet Archive · Gerstein 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-161-265.webp)
