Modern practice of the electric telegraph. A handbook for electricians and operators (1872)
Pope, Frank L. (Franklin Leonard), 1840-1895 · New York : D. Van Nostrand · leaf 45
58. ARRANGEMENT OF A TERMINAL STATION.—Fig. 17is a diagram showing the arrangement of wires, batteries, … Fio. 17. and instruments for one of the terminal stations of a
Telegraph
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