Piorry monaural stethoscope and pleximeter (?), Eu
1830-1840
Laennec monaural stethoscope, European, 1801-1839
1801-1839
Laennec monaural stethoscope
Monaural stethoscope
Crowfoot monaural stethoscope
1827-1870
Monaural stethoscope
Piorry monaural stethoscope by Lindsey
1830-1840
Stethoscope, England, 1834-1840
1834-1840
Laennec monaural stethoscope, European, 1801-1860
Piorry monaural stethoscope
1830-1840