Hearing aid, behind ear, England, 1980
An external hearing aid has an ear mould which fits in the ear. The receiver, amplifier and battery sit externally behind the ear. This type of external hearing aid has been superseded by smaller, more discrete intra-aural hearing aids These sit in the ear canal. It was donated to the Science Museum by the Royal National Throat, Nose & Ear Hospital in London.
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A condition where the hearing in both ears in not functional to ordinary levels.
Glossary: hearing aid
A small electronic apparatus that amplifies sound and is worn in or behind the ear to compensate for impaired hearing.