Otoscope, Weber, steel
1871-1900
Toynbee's ausculation tube
1861-1904
Otoscope, in case
1939
Otoscope, battery operated with three sizes
1939
Double ausculation tube, English(?), 1861-1905
1861-1905
Ausculation tube, English(?), 1861-1904
1861-1904