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stereo vision test
Stereo Optical Co. Inc.
North America: Illinois, Chicago
overall: 203 x 148 mm
Handheld panel bearing three stereo vision tests whch opens up liek a book: Graded series of four circles within squares test for adults, house fly test for adults or children (three dimensional 'Vectogram'), and animals test for young children. Together with a pair of black plastic stereo viewing spectacles. Also a printed instruction leaflet, A5 format, printed in black and white on four sides, folded.
Gift of Vision Express, 2009