Monaural stethoscope
1840-1850
Portable monaural stethoscope, Europe, 1860-1890
1860-1890
Monaural stethoscope
1830
Monaural stethoscope
1851-1910
Piorry's monaural stethoscope and plessimeter
1830-1840
Monaural stethoscope
1830-1850
Burrow's monaural stethoscope
1831-1905
Stokes's monaural stethoscope
Monaural stethoscope
1831-1900
Monaural stethoscope
1840-1850
Monaural stethoscope
1840-1850
Burrow's monaural stethoscope
Burrow's monaural stethoscope
Monaural stethoscope
1850-1860
Monaural stethoscope
1831-1900
Monaural stethoscope
1840
Burrow's monaural stethoscope
Ear plate from monaural stethoscope
1801-1910
Monaural stethoscope
Monaural stethscope, English(?), 1851-1910
1851-1910
Ear plate from monaural stethoscope
1851-1910