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trial frame for prisms
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
c.1900
metal; iron; brass
1999.3216
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
c.1900
metal; iron; brass
Trial frame with metal (iron?) frame. Shallow C-bridge. Straight sides with oval loops at ends. Round eyes and brass margins, possibly once covered with leather on the front. Large screws secure eyerims at sides.
1999.3216