LENS SET 6 LENSES ACRYLIC 38MM ,Each

Details

Here is the corrected text: This set of six acrylic optical lenses measures 50mm in diameter. It includes one each of the following: double convex lens with a 20cm focal length; double concave lens with a 20cm focal length; plano-convex lens with a 25cm focal length; converging concave-convex lens with a 25cm focal length; diverging concave-convex lens with a 25cm focal length; and plano-concave lens with a 25cm focal length. Each lens has brushed edges and a polished face. The lenses are stored in a hinged wooden box with foam inserts to keep them protected. These educational-grade optics are intended for basic study only.