TELEGRAPH INSTRUMENTS OF EUROPE

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So called "Baseboards" (simplex & duplex) used by the British army. It has a sounder by ATM, a GPO double current key, a Silvertown relay, a galvanometer by Record Elec., and a switch by S & M. In addition there is an ATM rheostat that is interchangeable (sliding in/out) with the sounder. 5

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