Early binaural stethoscope
1861-1866
1861-1866
circa 1861
1862
1865-1866
1865
1866
1865
1934
1863-1865
2000-100 BCE
1893-4
1867
1863-7
1865
1864
1955; 1830
1867
1867
circa 1861
1862
1862
1990-96
1867
1865
1930 (replica); 1834 (original)
1865-1866
1868
1864
1801-1840 (original); 1901 (model)
1862
1705-1737
1862-1866
1870-1877
1865
1865
1772 (original); 1919 (model)
4000-2001 BCE
1862
1934
1888
1839 (original); circa 1988 (replica)
1775-1799 (original); 1900-1907 (model)
1866
1830 (original); 1967 (model)
1865
1863
1863
1867
1862
1825; 1910