Compound monocular chest microscope with rack focusing of stage
1801-1825
Gould microscope on hinged pillar with flat Pritchard shaped foot
1800-1825
Artificial left hand, Birmingham, England, 1914-1920
1914-1920
Tortoiseshell Ear Trumpet Hearing Aid
1801-1900
Chest pencil, England, 1914-1920
1914-1920
Compound monocular chest microscope Cuff focusing
1775-1800
Chest microscope compound monocular body tube with Cuff focusing and stage
1800-1819