Optometer, possibly by Hardy, U.S.A.
Double optometer, patented by Davidson
Optometer
Double optometer, on stand, patented by Davidson
Brass optometer
1914-1940
Optometer
Early optometer
1801-1900
Optometer, Smee type, London, early 19th Century
1801-1830
Metal, phoro-optometer (head only) combines a bracket trial frame
1914-1940
Early optometer, possibly French
Optometer on pillar stand, with 17 lenses
Wooden opsiometer, patented by Raphael
Optometer with four sets of lenses
Steel plated optometer with cover over prong and suspension loop
1915-1940
White metal optometer
1890
Optometer, in case, French (?), 1801-1830
1801-1830
Optometer
Optometer
Cylindrical optometer
1851-1910
Cylindrical optometer
1851-1910
Davidson double optometer on stand
Optometer, by Raphael's of London
1940-1950