Alta2 Invisible In the Canal hearing aid
2018
Hearing aid
1900-1940
Conversation tube hearing aid
1801-1900
Medresco Portable Hearing Aid
1953
Ear trumpet made from an animal horn
1701-1900
Conversation tube hearing aid
1860-1900
Ear trumpet and walking stick combined
1875-1885
Intra aural hearing aid
1978-1981
Ear trumpet
1850-1900
Alta2 Invisible In the Canal hearing aid
2018
The Ardente Hearing aid, London, England, 1920-1930
1920-1930
Gutta-percha ear trumpet hearing aid, 1840-1910
1840-1910
Conversation tube hearing aid
1870-1920
Hearing aid, type BE14
1978-1980
Ear trumpet hearing aid
1869-1900
Brass ear trumpet
1801-1900
Silver ear trumpet hearing aid, London, England, 1814
1814
Soft toy, with cochlear implant, China, 1999
1999
Swan-shaped ear trumpet
1801-1900
Swan shaped ear trumpet
1850-1900
Conversation tube hearing aid
1900-1950
Telescope ear trumpet
1850-1900
Acoustic impedance meter type ZA20
1970-1980
Telescopic ear trumpet
1840-1900
Double ear trumpet with headband
1850-1928
Portable microscope requiring a fibreoptic light source
1960-1975
Conversation tube hearing aid
1801-1900
Tin plate ear trumpet
1850-1900
Part of a hearing aid
1801-1900
Telescopic ear trumpet hearing aid
1900-1950
Ear trumpet hearing aid
1801-1900
Conversation tube hearing aid
1840-1900
Small ear trumpet
Brass ear trumpet, English(?), 19th century
1801-1900
Two OL65 hearing aids with one earphone and two earmolds
1969
Anatomical model of the ear
1960-1968
Conversation tube hearing aid
1880-1935
Silver ear trumpet hearing aid
1829
Gardiner Brown's tuning fork (C3)
1880-1895
Silver-plated telescoping ear trumpet
1830-1880
Ear trumpet
1850-1900
Infant audiometer, Denmark, 1970-1980
1970-1980
Struycken monochord (cased) made by H. Pfau of Berlin circa 1930
1930
Aluminium ear trumpet
1870-1917
Ear trumpet hearing aid
1801-1910
Two bells from hearing aids
1801-1900
Conversation tube hearing aid, probably English, 1870-1895
1870-1895
Box of artificial ear drums, London, England, 1931
1931
Conversation tube hearing aid
1880-1931
Conversation tube hearing aid
1870-1930