ear trumpets

ear tube

3/4grilleearside
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image of ear trumpet
8x4mm
image of ear trumpet
9x4mm
image of ear trumpet
10x4mm
image of ear trumpet
10mm
image of ear trumpet
12mm

Ear tubes that were used to open the ear canal had some purpose.

Ones that were supposed to otherwise improve hearing are useless.

They were sold in their thousands to unsupecting customers. Some were even silver plated.

One design had a vibrating reed incorporated that was also absolutely useless.
5 examples