Percussor and ivory pleximeter with scale
1831-1920
Percussor and ivory pleximeter with scale
1889-1920
Piston action combined percussor and pleximeter
1861-1920
Piston action combined percussor and pleximeter
1861-1920
Combined percussor and pleximeter, cased, c1850
1841-1860
Piston action combined percussor and pleximeter
1861-1920
Piston action combined and pleximeter
1861-1915
Percussion hammer and pleximeter in leather case
1871-1900
Percussor and ivory pleximeter with scale
1841-1920
Piston action combined percussor and pleximeter
1861-19