The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 148
. These are fitted in a separate case—as shown inFig. 137—which is connected by flexible conductors to thetable instrument, and is screwed to the wall or under the desk. The connections of the complete instrument are shown inFig. 138. Instrument-Fixing.—Many practical points need to beattended to… … Jf MAGNETO BELL WITH INDUCTION COIL & CONDENSER TABLE TELEPHONE C.B 1 o J
Telephone
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