MusEYEum Online Catalogue

Trial Case rack & three trial frames
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial case
Europe: United Kingdom
Early 20th c.
wood; metal; glass
overall: 518 x 410 mm

Wooden trial case rack with white metal lift-out ring. Fixed internal rack of thirty five pairs of concave lenses in white metal frames with handles, twenty two pairs each of concave and convex cylindrical lenses in metal frames, thirty four pairs of convex spherical lenses in yellow metal frames, sixteen prismatic lenses in white metal frames (one lens missing), nineteen accessory lenses (stenopaeic slit, occluder, two Maddox rods and various coloured filters including Crookes 'B' lens). Lens powers marked in ink on white scales from +/-0.12 D to +/- 20.00 D. A few replacement lenses from other sets. Also three trial frames, each simple double drop cell type with half scale and adjustable PD.

2003.302

Gift of Mr Will Furniss, 2003