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trial case
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial case
American Optical Company
North America: USA, Massachusetts, Southbridge
leather

Leather trial case. Hinged lid. Keyhole, two clasps. Removable wooden lens rack with red velvet lining. White manufacturer's plate. Contains 40 spherical concave lenses and 39 spherical convex lenses. (One gap). 22 pairs of cylindrical lenses, each in round white metal frame with handle. 9 prisms. Occluder, pinhole (hole covered up), 2 stenopaeic slits, red filter, blue filter. Also a transparent plastic Helix 15cm ruler, two variable prism lenses and an AIM double perforated fold-out mirror.


1999.3071

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