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trial frame
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
20th c.
metal; plastic; bakelite
1999.68
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
20th c.
metal; plastic; bakelite
Double drop cell trial frame. Shiny white metal. Round eyes. Two cells at front of each eye. White half scales, marked 0-180. Adjustable for P.D. and nose rest. Straight sides with bent ends. (Right side missing).
1999.68
Gift