Dial Telegraph Sender and Receiver Combination
Ruhmkorf Alphabet Dial Telegraph
The telegraph is an early example of the Wheatstone apparatus and is made from silver, brass, mahogany and iron. See pg. 100 figs. 13a and 13b in Pioneers of Electrical Communication.
Dial Telegraph Kit
In green covered paperboard box, with instructions, 2 spools of silk-covered green wire and battery. Box measures 12" x 9"x 3-3/4". Sending and receiving dial telegraph apparatus used to demonstrate Wheatstone's alphabet dial telegraph invention.