3 4 c m
40cm
actual image size: 32cm x 26cm
Description
This hearing aid, made in the UK, has a phenolic brown battery box and earpiece, black phenolic control unit, flat circular amplifier with imitation tortoiseshell celluloid case and a metal clip pocket attachment. The earpiece has a tortoiseshell celluloid ear plug and a metal hook for hanging over the ear.
Image Details
Image Ref.
10328330
© Science Museum / Science & Society Picture Library