Omnigraph Mfg (1 results)

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      Published by New York c. 1895, New York 1895

      Seller: High Ridge Books, Inc. - ABAA, South Deerfield, MA, U.S.A.High Ridge Books, Inc. - ABAA

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      Condition: Used

      US$ 100.00

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      24 pp. An interesting training device for prospective telegraphers, the Omnigraph has a dial for spelling out messages which would then be sent in Morse Code. There is also a different machine With a QWERTY-type keyboard for practice in listening to the sounds.