ACOUSTICON DICTOGRAPH MODEL SRD (1910-1928) RARE EARLY HEARING AID ANTIQUE

Description

The
Acousticon
model SRD was a dual microphone carbon hearing aid manufactured between 1910 and 1928 by the General Acoustic Company, which later became Dictograph Products, Inc.
The double carbon microphone. Note that the microphone grill consists of 8 slots for each microphone.
This carbon microphone measures 5⅞" by 3⅜" by 15/16" thick.
The 6-step volume control. Soft is to the left and loud to the right.
There is no battery or instructions.
There is a second cable. All of the cable jacks are the same.
The microphone can be used while in the box or used in the pocket with the pocket clip
Measures 8"X 6"X 3"