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Swann-Cole Trial Frame?
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
Europe: United Kingdom, England
1930s
metal; celluloid
overall: 75 mm x 170 mm

Trial frame. White metal (rhodium plated). Two round eyes suspended from two-part cylindrical browbar adjustable for p.d. Nose rest adjustable for height and angle. White semi-circular celluloid scales. Double drop cell in front and single drop cell behind each eye. Both eyes include wheeled cylinder rotating device.


2017.619

Transferred from the former Museum and Library of Optometry, Aston University / Gift of the family of the late Anthony G. Sabell FCOptom, 2016



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