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Such was the pioneer instrument of Cooke and Wheatstone, which is still employed in England in a simplified form as the "single" and "double" needle-instrument on some of the local lines and in railway telegraphs. S ... 1 . . T 2 .... U .. 3 .... V ... 4 .... W . 5 X ... 6 ...... Y .. .. 7 .. Z ... . 8 .. .. & . .. 9 .. Period .. .. 0 Comma .. Morse Signal Alphabet.
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