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test for stereoscopic vision - 7 plates 60/480" sec. of arc - complete with 2 pairs of Red/Green spectacles art. 63.005.02 and rubber model 63.005.04 for children - we remind you that in the TNO test, the red lens must be positioned in front of the left eye - the adult spectacles are reversible and can be used for other tests or anaglyph exercises