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trial frame
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
American Optical Company
North America: USA
Early 20th c.
metal
1999.3255
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
American Optical Company
North America: USA
Early 20th c.
metal
Trial frame. Metal frame, fully-revolvable round eyes and semi-circular white bakelite scales. Springs to hold lenses in place. Bridge bar with sliding nose rest and inlaid bakelite scales. Sliding curl sides.
1999.3255