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refractometer slide set
TRIAL CASES, FRAMES AND REFRACTOR HEADS
refractometer slide
metal; glass

Set of nine compound refractometer slides in shiny metal frames, each holding ten lenses. (One has lenses missing). Each slideframe marked in dioptres and inches. Also shiny metal spheric guide designed to slide along the rows of lenses.


1999.2705

Gift of Mr K. O. Dunscombe, FBOA, 1963



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