. . . And Now a Word About a Word
Sir: Your excellent article, ". . . And Now a Word about Commercials" [July 12], suffers from one serious omission. It does not mention a device known to the fraternity of electricians as the "blab-off." This consists of an electric cord of any length, with an on-off switch at one end, the other attached to the speaker in the set. With it you can turn off the sound as you wish, while the picture continues. Any electrician will install this thing for a trifling fee....
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