Conversion tube hearing aid, circa 1860

Conversion tube hearing aid, circa 1860

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Credit: SCIENCE PHOTO LIBRARY

Caption: Conversion tube, dating from around 1860, England. This device is made from ivory and cloth covered rubber. It was used to assist hearing; one person would talk into the funnel-shaped end of the tube and the narrower end would be placed in the listener's ear canal. The talker's voice was transmitted along the tube to amplify the sound.

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Keywords: 1800s, 1860, 1860s, 19th century, aid, aids, antique, assist, assistance, assisting, assists, cloth covered, conversion tube, conversion tubes, device, devices, green background, hear, hearing, hearing aid, hearing aids, historical, history, ivory, medical, medical instrument collection, medicine, nineteenth century, rubber, sound, tube, tubes

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