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trial case / trial frame
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial case
Clarkson's Optical Stores
Europe: United Kingdom
Early 20th c.
wood
overall: 52 x 280 x 277 mm
1999.2731
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial case
Clarkson's Optical Stores
Europe: United Kingdom
Early 20th c.
wood
overall: 52 x 280 x 277 mm
Wooden trial case with mitred joints, hinged lid, brass hinges, clasps of the three rounded post type (one clasp missing). Red satin lining to lid. Metal label fixed to inner compartments. 58 concave rimless lenses, 3 rimmed concave lenses, 53 rimless convex lenses (several gaps). Labelled in dioptres. Also double-drop cell trial frame in dark metal with half eyes, white scales and straight metal sides.
1999.2731
Gift of F.G. Hayes Jones