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trial frame
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
Early 20th c.
metal
1999.3290
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
Early 20th c.
metal
Double drop cell trial frame. Non-adjustable. White metal rounded edge rear section including C-bridge and joints. Flat-edged front section with fenestration to flattened base. Half oval eyes. Metal scales with flattened bottoms, marked 0-90-0. Thin straight sides with spatula ends.
1999.3290