EAR TUBES FOR PHONE MAKE WORDS DISTINCT (Jul, 1933)
I’m not sure it would be possible to design a worse set of earphones…
EAR TUBES FOR PHONE MAKE WORDS DISTINCT
Persons hard of hearing, who have difficulty in carrying on a telephone conversation, are said to be aided by the new set illustrated above. When answering a call, the user places a receiver of conventional design (at right of photo) upon the base of an instrument resembling a physicians’s stethoscope. Tubes lead to a pair of earpieces that help to make every word audible. In speaking, the special transmitter, seen in background, is used.