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Hearing Aid

Hearing Aid

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Usage conditions apply
Hearing aid known as a conversation tube.
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
ear trumpet
hearing aid, conversation tube
place made
United States: Vermont, Underhill Center
Physical Description
vulcanite (overall material)
overall: 1 7/8 in x 15 1/4 in x 11 1/4 in; 4.7625 cm x 38.735 cm x 28.575 cm
overall: 54 cm x 4.5 cm; 21 1/4 in x 1 25/32 in
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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