![](https://coimages.sciencemuseumgroup.org.uk/290/991/large_thumbnail_a625095__0002_.jpg)
Early binaural stethoscope
1861-1866
1861-1866
circa 1861
1862
1870
1860
1865-1866
1865
1866
1865
1871
1934
1863-1865
1860
circa 1871
circa 1860
1866-1870
1867
1867
circa 1861
1860
1862
2000-100 BCE
1893-4
1867
1863-7
1867-1868
1865
1864
circa 1868
1955; 1830
1870s
1869
1862
1990-96
1867
1860
1865
1930 (replica); 1834 (original)
1865-1866
1868
1870
1864
1871
circa 1860
1862
circa 1860
1705-1737
1870-1877
1860-1870
1866-1870