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TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
Europe: United Kingdom, England
1930s
metal; celluloid
overall: 75 mm x 190 mm
Trial frame. White metal (rhodium plated). Two round eyes suspended from flat browbar adjustable for p.d. by single control wheel set off to the left. Nose rest adjustable for height and angle. Flat-section sides, bowed at ends. White semi-circular celluloid scales. Double drop cell in front and single drop cell behind each eye. Both eyes include wheeled cylinder rotating device.
2017.620
Transferred from the former Museum and Library of Optometry, Aston University / Gift of the family of the late Anthony G. Sabell FCOptom, 2016