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Cine attachment for Wild M20 microscope

1970-1980

Eight microscope objectives in case for twelve

1851-1900

"Ardente" hearing aid, cased, by R.H. Dent, England, 1920-1940

"Ardente" hearing aid

1920-1940

Haemoglobinometer, Gower, glass, in leather case, owned by the late Sir Gordon Hamilton Fairley, made by Hawksley and Sons Limited, 83 Wigmore Street, London, England, 1851-1900.

Haemoglobinometer, Gower, glass

1851-1900

Pachon sphygmomanometer by G. Boulitte, 15-21 rue Bobillot, Paris, France.

Pachon sphygmomanometer by G. Boulitte

Ear phone battery hearing aid

Ear phone battery hearing aid

1910-1940

Incomplete violet ray apparatus, in fitted leatherette case, three heads and a curved tube only, English, early 20th century

Incomplete violet ray apparatus

1920-1950

Ardente battery hearing aid

Ardente battery hearing aid

Aveling's blood transfusion apparatus, in case, incomplete, by Down, London, late 19th century

Aveling's blood transfusion apparatus, with components

1870-1890