Micronic Model 202 Vacuum Tube Hearing Aid The Micronic Model 202 one-piece vacuum tube hearing aid was made by Micro-Electronic Products, Inc. of Boston, MA in 1948. The Micronic Model 202 vacuum tube hearing aid measured 4 3/16” by 2¼” by 13/16” thick (10.6 x 5.7 x 2.1 cm). Without batteries, it weighed 3.3 oz. (94 g). |  | Click picture for larger view | | |   | | | |
| Front view of the Micronic Model 202 vacuum tube hearing aid showing the attractive aluminum front. The microphone grill consisted of 4 horizontal slots situated between 2 sea horses (upper front). On the lower front, was the Micronic name and above it their logo—a crowned "M". Note the pocket clips on each side (near the top).
|  | Click picture for larger view | | | |
| Top view of the Micronic Model 202 vacuum tube hearing aid showing the on-off/3-position tone control (left) and the volume control wheel (right).
|  | Click picture for larger view | | | |
| Rear view of the Micronic Model 202 vacuum tube hearing aid showing the swing down battery door (lower half).
|  | Click picture for larger view | | | |
| Top rear view of the Micronic Model 202 vacuum tube hearing aid showing the location of the model number (202).
|  | Click picture for larger view | | | |
Rear side view of the battery compartment of the Micronic Model 202 vacuum tube hearing aid. The battery door swung down and out.
|  | Click picture for larger view | | | |
| Close-up view of the receiver cord plug of the Micronic Model 202 vacuum tube hearing aid. The receiver cord plugged into the top left side of the battery compartment. A most unusual place to be sure. This plug slid into place from the right to the left (shown in its starting position on the right). Micronic used the Brush company's rather unusual plug and jack for this model. |  | Click picture for larger view | | | |
| Inside view of the battery compartment of the Micronic Model 202 vacuum tube hearing aid showing the serial number (M 212181) on the metal divider between the "B" and "A" batteries. Also, note the receiver cord plug (top left) in it's proper position when plugged in. |  | Click picture for larger view | | | |
| Close-up view of the battery compartment of the Micronic Model 202 vacuum tube hearing aid. This hearing aid used a 1½ volt "A" battery such as the Eveready 1015E and a 22½ volt "B" battery such as the Eveready 412E. |  | Click picture for larger view | | | |
| View of the Micronic Model 202 vacuum tube hearing aid showing the receiver cord and two-prong plug (receiver missing).
|  | Click picture for larger view | | |
|
(If a larger picture doesn't appear, you may have to
turn your pop-up blocker off)
|
| |
