FOUR-FOOT DIAL SHOWS PHONES MYSTERIES (Jul, 1931)
FOUR-FOOT DIAL SHOWS PHONES MYSTERIES
The intricacies of using the dial telephone come easily to students at a western secretarial school, where a four-foot dial was recently rigged up to explain its mysteries.
Not a dummy, the big dial actually works. It is connected with two telephones, an amplifying apparatus, and a loudspeaker. When the instructor dials a number, the loudspeaker reproduces, so that all may hear them, the typical sounds that will be heard; and the instructor explains to the pupils what they mean.