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F. H. Smith's Pocket Trial Case; domiciliary trial case
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial case
North America: USA
c.1899
leather; glass
overall: 41 mm x 261 mm x 106 yd

Leather trial case missing lid. Base coming adrift. Press stud fastenings, probably for flap lid. Red velvet lining. Contains 28 spherical lenses and 18 cylindrical lenses, each in round white metal frame with handle. Occluder, pinhole, stenopaeic slit, red slit (Maddox rod?) and one other lens. One gap.


1999.308

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