Kingscote's lamb's wool percussor and pleximeter, English(?), 1896-1905 Kingscote's lamb's wool percussor and pleximeter 1896-1905
Percussor and ivory pleximeter with scale, English(?), 1841-1920 Percussor and ivory pleximeter with scale 1841-1920
Percussor, pleximeter and monaural stethoscope (cased), Italian, 1831-1920 Percussor, pleximeter and monaural stethoscope (cased)
Piston action combined percussor and pleximeter, English(?), 1861 to 19 Piston action combined percussor and pleximeter 1861-19