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no date - Philo Holcomb, Jr., inventor of the varioplex, adjusts one of the units




no date

Philo Holcomb, Jr., of the Western Union Company, adjusts one of the units of the "vario-plex," which he invented as an aid to more efficient and faster service for heavy users of leased wires and trunk lines. The mechanism also contains a metering system. The telegraph industry's birth will be celebrated May 24, 1944, the 100th anniversary of Samuel F.B. Morse's first successful message, "What Hath God Wrought!"

Original Caption by Science Service
N.W. Ayer & Son, Inc.


National Museum of American History


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