Hearing Aid

Hearing Aid

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Usage conditions apply
Hearing aid of the sort termed a conversation tube. The mouth and ear piece are made of bone.
Ref. George Tieman & Co., American Armamentarium Chirurgicum (New York, 1879), p. 53.
Charles Truax, The Mechanics of Surgery (Chicago, 1899), p. 796.
Currently not on view
Object Name
hearing aid
ear trumpet
hearing aid, conversation tube
Physical Description
bone; fabric (overall material)
overall: 1 5/8 in x 9 1/2 in x 12 7/8 in; 4.1275 cm x 24.13 cm x 32.7025 cm
overall: 28 1/2 in x 1 5/8 in; 72.39 cm x 4.1275 cm
ID Number
catalog number
accession number
See more items in
Medicine and Science: Medicine
Data Source
National Museum of American History
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