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Trial frame
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
20th c.
metal; celluloid
2017.623
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
20th c.
metal; celluloid
Trial frame. White metal. Two-part cylindrical browbar, adjustable for PD and nasal height via screwthread wheel. Metal nose rest. Centre joints. Flexible flat-section sides, with spatula ends. Round eyes featuring double drop cell at front, with white celluloid protractor scale, and single drop cell behind. Right rim broken at point of suspension.
2017.623
Transferred from the former Museum and Library of Optometry, Aston University / Gift of the family of the late Anthony G. Sabell FCOptom, 2016