Alta2 Invisible In the Canal hearing aid
2018
Medresco Portable Hearing Aid
1953
Hearing aid
1900-1940
Ear trumpet made from an animal horn
1701-1900
Conversation tube hearing aid
1801-1900
Alta2 Invisible In the Canal hearing aid
2018
Brass ear trumpet
1801-1900
Intra aural hearing aid
1978-1981
Gutta-percha ear trumpet hearing aid, 1840-1910
1840-1910
Conversation tube hearing aid
1860-1900
The Ardente Hearing aid, London, England, 1920-1930
1920-1930
Silver ear trumpet hearing aid, London, England, 1814
1814
Ear trumpet hearing aid
1869-1900
Hearing aid, type BE14
1978-1980
Conversation tube hearing aid
1870-1920
Ear trumpet
1850-1900
Ear trumpet and walking stick combined
1875-1885
Telescope ear trumpet
1850-1900
Acoustic impedance meter type ZA20
1970-1980
Conversation tube hearing aid
1900-1950
Struycken monochord (cased) made by H. Pfau of Berlin circa 1930
1930
Portable microscope requiring a fibreoptic light source
1960-1975
Phonic Ear and F.M. charger used in speech training
1960-1970
Conversation tube hearing aid
1801-1900
Tin plate ear trumpet
1850-1900
Part of a hearing aid
1801-1900
Swan shaped ear trumpet
1850-1900
Hearing aid, Sonotone 1000
1960-1970
Ear trumpet hearing aid
1801-1900
Swan-shaped ear trumpet
1801-1900
Conversation tube hearing aid
1840-1900
Conversation tube hearing aid
1840-1900
Small ear trumpet
Branded plastic bag for Oticon Hearing Aids
2018
Brass ear trumpet, English(?), 19th century
1801-1900
Drying tub for Oticon IIC hearing aids
2018
Telescopic ear trumpet
1840-1900
Double ear trumpet with headband
1850-1928
Infant audiometer, Denmark, 1970-1980
1970-1980
Ear trumpet hearing aid
1801-1910
Two bells from hearing aids
1801-1900
Conversation tube hearing aid, probably English, 1870-1895
1870-1895
Telescopic ear trumpet hearing aid
1900-1950
Conversation tube hearing aid
1801-1900
Conversation tube hearing aid, probably English, 1801-1900
1750-1840
Conversation tube hearing aid
1801-1900
Steel telescoping ear trumpet
1840-1920
Ear trumpet
1850-1900
Telescoping ear trumpet
1870-1900
Small crescent-shaped metal ear trumpet
1850-1930