This handy light weight cardboard viewer folds into a plastic envelope
(8"x5"/20.3 x 12.7 cm) with pressure sensitive adhesive backing for easy
attachment to a book or report cover. The envelope can also be used as a
convenient mailing envelop. Magnification factor: 1.5X.
While this inexpensive and convenient stereo viewer can never be seen as a
substitute for a high quality mirror
stereoscope, or even one of the other
SPI fold up stereo viewers, it just can not be beat for its convenience
and low cost.
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