Tunzelmann, George William von, 1856- · New York, Scribner & Welford · leaf 200
BATTERSEA BALHAM Fig. 62. Pla> … CKOYDON DEPTFOHO BRIXTON 01 lONDON TELEPHONE EXCHANGE. THE TELEPHONE EXCHANGE SYSTEM. 185 Each of the exchanges is connected by one or moretrunk wires, as they are called, shown by dotted linesin the diagram, with the central exchange at OxfordCourt, Cannon Street. The continuous lines show…
Electric industries · Electricity
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