F A Hardy optometer
 Catalogue Number: 2462 F A Hardy optometer Category: Equipment Sub-Category: Optometer Designer/inventor: Francis A Hardy Year Of Publication/Manufacture: c1902 Time Period: 1900 to 1939 Place Of Publication/Manufacture: Chicago Illinois USA Publisher/Manufacturer: F A Hardy & Co Description Of Item: Reading optometer of brass, glass & ebonised wood. Brass cylindrical monocular eyepiece with double cell for trial lenses and left/right occluders. Ebonised wood handle. Brass holder of visual target moves along calibrated bar by rack and pinion gear. Imprint 'F.A.HARDY & CO/ OPTICIANS/ CHICAGO. ILL', 'PAT. APR. 29 1902'. U.S. Patent No 698833 was granted for this design to Francis A Hardy on April 29 1902. L:375mm x H:175mm x W:146mm. Historical Significance: Fancis A Hardy had secured an earlier patent for an optometer, US268016 on November 28, 1882. How Acquired: Donated by Michael Aitken Date Acquired: July 2014 Condition: Very good Location: Archive room. West wall. Unit 5 Overhead display |