These scratch-resistant, clear acrylic lenses will last for years. Large enough to use in classroom demonstrations and durable enough to withstand student use and abuse. Set includes six lenses: a double convex, plano convex, concavo convex, double concave, plano concave and convexo concave. Storage box contains a labeled plastic tray to make identifying the different lenses a snap. Activity guide is included.
1-800-452-1261
