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trial case
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial case
Curry & Paxton Ltd
Europe: United Kingdom, England, London
Post 1920
wood
1999.3911
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial case
Curry & Paxton Ltd
Europe: United Kingdom, England, London
Post 1920
wood
Wooden trial case with hinged lid. Hook clasp. Small white plate on lid. Capacity for 7 lenses. Contains 2 lenses with white metal frames and short handles. 1) Ground glass disc in centre of which is cemented a plano conical lens. 2) Lens with four cut quadrants of differing optical powers. Chamois leather cloth.
1999.3911
Gift of Professor W. J. B. Riddell, 1970