Objects
Viewing Record 1312 of 1442Previous Record Next Record
Switch Views: Lightbox | Image List | List
trial case
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial case
Thomas Armstrong & Brother
Europe: United Kingdom, England, Lancashire, Liverpool; Europe: United Kingdom, England, Lancashire, Manchester
Early 20th c.
wood; metal; glass
overall: 54 x 262 x 192 mm
2003.196
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial case
Thomas Armstrong & Brother
Europe: United Kingdom, England, Lancashire, Liverpool; Europe: United Kingdom, England, Lancashire, Manchester
Early 20th c.
wood; metal; glass
overall: 54 x 262 x 192 mm
Wooden trial case with hinged lid and yellow metal clasp. Fixed internal rack of thirty four concave lenses in white metal frames with handles (one handle missing), thirty four convex lenses in yellow metal frames, four accessory lenses (stenopaeic slit, covered pinhole, occluder and red filter). Lens powers marked on white scales from +/-8.00 D to +/- 0.25 D.
2003.196
Gift of Mr Will Furniss, 2003