Acousticon No. 5 Hearing Aid Battery
The Acousticon No. 5 battery was produced by
Dictograph Products, Inc. of New York for use in the Acousticon Hearing
aids of the 1910s and 1920s.
It measured 3 7/8" by 2" by 1" and
weighed 6 oz. It was composed of two carbon-zinc cells and delivered 3
volts.
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