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loose trial lenses
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial lens
glass; metal
1999.2756
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial lens
glass; metal
90 trial lenses, mainly with white metal frames (some yellow) and handles. Includes i) green tinted lens in yellow metal frame with handle, ii) two red tinted lenses, iii) smoked lens, iv) blue tinted lens, v) two-tiered blue lens, vi) two condensing lenses, vii) pinhole lens with label.
1999.2756