Double optometer, on stand, patented by Davidson
Wooden opsiometer, patented by Raphael
Early optometer
1801-1900
Steel plated optometer with cover over prong and suspension loop
1915-1940
Brass optometer
1914-1940
Optometer
Optometer, Smee type, London, early 19th Century
1801-1830
Optometer
Optometer on pillar stand, with 17 lenses
Optometer on pillar stand, with 24 lenses
Metal, phoro-optometer (head only) combines a bracket trial frame
1914-1940
Early optometer, possibly French
Optometer with four sets of lenses
Cylindrical optometer
1851-1910
Cylindrical optometer
1851-1910
Optometer
Optometer, possibly by Hardy, U.S.A.
White metal optometer
1890
Optometer
Optometer, in case, French (?), 1801-1830
1801-1830
Davidson double optometer on stand
Optometer by J. H. Stewart
Optometer, by Raphael's of London
1940-1950