Equipment - MORSE CODE SENDER, The Vibroplex Company, Unknown
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Attribution
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Small rectangular morse code communications sender. The sender is mounted on a solid base. It is operated by finger touch and has a pointer that has a number of spring and screw adjustable points. The code sender is operated by the finger of the operator.
Inscriptions & markings
“PATENTED No. 217455 VIBROPLEX THE VIBROPLEX COMPANY INC 833 BROADWAY NEW YORK”