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Bishop Harman folding retinoscopy wheel John Weiss & Son Ltd mid 20th c. View |
Bishop Harman's Refractometer c.1905 View |
CL-1 Hand Refractometer Atago Company Ltd; ChemLab Scientific Products Ltd 1987 View |
Compound Refractometer / optometer / astigmatism test Douglas & Wooldridge Ltd (Stourbridge) 1890s View |
Compound refractometer slide set and case Douglas & Wooldridge Ltd (Stourbridge) 1890s View |
DeZeng's Refractometer Cataract Optical Co Late 19th c. View |
Eye Refractometer Tokyo Kogaku Kikai K. K. 1970s? View |
Fournet's Refractometer Frankham c.1883 View |
Harman's Refractometer S. Maw, Son & Sons 20th c. View |
Refracto-Rack The Rayner Optical Company Limited 1980s View |
refractometer slide set View |
refractometer slide set View |
Snell's Refractometer Priest & Ashmore Late 19th c. View |
Snell's Refractometer Priest & Ashmore Late 19th c. View |
Zeiss Parallax Refractionometer (Gullstrand Ophthalmoscope) & case Carl Zeiss (Jena) c.1920s View |
Zeiss Parallax Refractionometer (Gullstrand Ophthalmoscope) & instrument stand Carl Zeiss (Jena) c.1922 View |