Conversation tube hearing aid
- maker:
- Bicknell & Co.
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Science Museum Group
© The Board of Trustees of the Science Museum
Conversation tube hearing aid, also known as a speaking tube, with flexible tube and ivory bell and ivory ear-piece with silver plated copper extension tube, by Bicknell & Co., 369 Strand, near Exeter Hall, London, England, 1750-1840.
Details
- Category:
- Audiology
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- A683033
- Materials:
- ivory, cardboard, string, copper (metal), sliver plated, textile and incomplete
- Measurements:
-
depth furled: 165 mm,
trumpet aperture: 50 mm,
tube diameter: 11 mm,
unfurled length: 980 mm
width furled: 225 mm
- type:
- hearing aids
