Lens Set, Lens Sets Are Ideal In The Classroom For Doing Optical Experiments Comparing Focal Lengths And Convex Vs. Concave Lenses., Pack Of 6

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Three diameters for a variety of uses.With ground and polished faces and ground edgesOne each: of double convex, plano-convex, converging concave-convex, diverging concave-convex, double concave, plano-concaveEach size is set of sixGlass Lens SetsS96196: 50mm diameterS96197: 38mm diameterAcrylic Lens SetS96198: 50 mm diameter