Optometer, objective or subjective
1831-1900
Optometer
Optometer
Optometer, English(?), 1851-1930
1851-1930
Optometer, objective or subjective
1831-1900
Optometer, objective or subjective
1831-1900
Optometer
Optometer
Optometer
Optometer, objective or subjective
1831-900
Optometer, objective or subjective
1851-1930
Optometer, F.D.A' 5
1831-1900
Optometer, objective or subjective
1801-1900