American Educational Plastic Stereoscope Glass, 2.2 Magnification
Create the illusion of 3-D when used in conjunction with stereo pictures or aerial photos. Made of high impact, crystal-clear plastic with a 2.2 magnification, 4.7 focal length, adjustable inter-pupillary distance, and folding legs for compact storage. Use with any of the stereo books or stereo photo sets. For grades K-12. Ages 5-18.