Early binaural stethoscope
1861-1866
1861-1866
circa 1861
circa 1860
1862
1865
1860
1860
1865-1866
1863-1865
circa 1861
1860
1865
1866
1865
1955; 1830
2000-100 BCE
1893-4
1934
1863-7
1864
1862
1862
1990-96
1860
1860
1865
1930 (replica); 1834 (original)
1775-1799 (original); 1900-1907 (model)
circa 1860
circa 1860
1862
1705-1737
1860
1865-1866
1865
1772 (original); 1919 (model)
1864
1860
1830 (original); 1967 (model)
circa 1860
1860-1866
1862-1866
1870-1877
1934
1888
1865
1801-1840 (original); 1901 (model)
4000-2001 BCE
1862
c1860