Early optometer
1801-1900
Optometer on pillar stand, with 24 lenses
Brass optometer
1914-1940
Optometer, possibly by Hardy, U.S.A.
Double optometer, patented by Davidson
Optometer
Optometer, Smee type, London, early 19th Century
1801-1830
Optometer
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
Early optometer, possibly French
Optometer on pillar stand, with 17 lenses
Wooden opsiometer, patented by Raphael
Optometer with four sets of lenses
Cylindrical optometer
1851-1910
Cylindrical optometer
1851-1910
Metal, phoro-optometer (head only) combines a bracket trial frame
1914-1940
Davidson double optometer on stand
Optometer, by Raphael's of London
1940-1950