Laennec's stethoscope
1815-1825
Foetal monaural stethoscope
1875-1885
Monaural stethoscope
1840-1850
Laennec-type monaural stethoscope, France, 1851-1900
1851-1900
Laennec monaural stethoscope
1815-1825
Traube's monaural stethoscope
Monaural stethoscope
Monaural stethoscope
King's monaural stethoscope
Monaural stethoscope
1801-1900
Fergusson's monaural stethoscope
Monaural stethoscope
1801-1900
King's monaural stethoscope
1890
Monaural stethoscope
A Lloyd Roberts' monaural stethoscope
Monaural stethoscope
1850-1860
Crowfoot monaural stethoscope
1827-1870
Fergusson's monaural stethoscope
Monaural stethoscope
Wooden monaural stethoscope
circa 1870-1920
Monaural stethoscope
Wooden stethoscope
1845-1855