The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 151
pliers, long-nose pliers, large and small screw - drivers, gimlets, bradawls, plugging chisel, large and small hammer, 2-foot rule, bell-hangers augur, tenon saw, and soldering iron.In addition to above, a joiners chisel, detector galvanometer, and a pair of tweezers will often prove useful. It is… … CHO Fig. 1416.—Earth-WireClamp. N. T. Co. s pattern CHAPTER VIII INTERMEDIATE SWITCHES AND EXTENSION INSTRUMENTS The simplest form of a telephone installation is a line havinga telephone set connected at each end, as in Fig. 142. Nextto this in simplicity is that of three telephone sets connectedto…
Telephone
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