Tiny Sonotone Carbon Hearing Aid The Tiny Sonotone carbon hearing aid was manufactured in 1930 by Sonotone International, Inc. of New York. |  | Click picture for larger view | | |  | | | |
| Front view of the Tiny Sonotone carbon microphone showing the pattern of the mic grill—12 holes in the outer ring, 6 holes in the middle ring and one hole in the center. The microphone measured 2¼" in diameter by 11/16" thick. The microphone plugged directly into a battery such as the Sonotone Model X42 3-volt battery.
|  | Click picture for larger view | | | |
| Rear view of the Tiny Sonotone carbon microphone. Under the pocket clip (top center) are the words "Sonotone Corp, New York" and just below the center, the serial number 20111. |  | Click picture for larger view | | | |
| The volume control/on-off switch shown in the mid volume range. |  | Click picture for larger view | | | |
| The earphone plugs of the Tiny Sonotone. (Unfortunately, the earphone is missing.)
|  | Click picture for larger view | | |
|
(If a larger picture doesn't appear, you may have to
turn your pop-up blocker off)
|
| |
