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TRIAL CASES, FRAMES AND REFRACTOR HEADS
prism trial set
Europe: United Kingdom, Scotland
Early 20th c.
glass; metal; wood
case: 62 x 125 x 140 mm
Set of twelve pairs of prisms in white metal rims with handles. Contained in hinged wooden case with compartments numbered 1-12, two brass hook clasps and red padded velvet lining to lid. Green baize on underside of case.
Gift of the Glasgow Eye Infirmary, 2003