Conversation tube hearing aid in box

Made:
1880-1915

Conversation tube hearing aid, also known as a speaking tube, in parts and boxed in a mahogany case, European, 1880-1915

Details

Category:
Audiology
Collection:
Sir Henry Wellcome's Museum Collection
Object Number:
A602760
Materials:
complete, silver, ivory, rubber, silk, metal, mahogany and velvet
type:
hearing aids
credit:
du Boulay, H.H.