Swimming Taught by Telephone (1934)

By means of a special headset and transmitter, a San Francisco coach is teaching swimming via telephone. The instructor stands on the edge of the pool and relays advice to his pupil in the water.

Specially prepared, waterproof transmitters and receivers, plus a length of telephone wire, comprise the set which operates on a charge of three volts. The advantage of the device is that faults are corrected while the swimmer is in action.

[via Modern Mechanix]

emily | 9:50 AM | Cell Phone Fashion |
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