Binaural stethoscope
1871-1950
Allison's differential binaural stethoscope by Weiss and Son
1859-1865
Binaural stethoscope
1851-1950
Binaural stethoscope
1910-1940
Binaural stethoscope
Binaural stethoscope
1910-1950
Binaural stethoscope
Binaural stethoscope
Binaural stethoscope
1891-1940
Ear-piece from binaural stethoscope
1851-1940
Ear-piece binaural stethoscope
1851-1950
Ear piece from Haydn Brown's binaural stethoscope
1871-1930
Ear-piece from binaural stethoscope
1861-1930
Ear-piece from binaural stethoscope
1861-1930
Ear-piece from binaural stethoscope
1861-1930
Binaural stethescope, by Hawksley, English, c1920
1910-1930
Ear-piece from binaural stethoscope
1871-1920
Ear-piece from binaural stethoscope
1871-1940
Ear-piece from binaural stethoscope
1851-1940
Ear-piece from binaural stethoscope
1861-1930
Allison's differential binaural stethoscope
1859-1865
Binaural stethoscope
Binaural stethoscope
Binaural stethoscope made by Reynolds and Branson Ltd
1871-1950
Binaural stethoscope
1861-1920
Binaural stethoscope
1861-1940
Ear piece from binaural stethoscope
1841-1940
Monaural stethoscope
1891-1950
Binaural stethoscope
1851-1920
Ear piece from binaural stethoscope
1851-1910
Binaural stethoscope
1861-1940
Binaural stethoscope
1861-1940