Demonstration Lens Set-Glass

The set contains 6 lenses, one each of double convex, plano-convex, concavo-convex, double concave, plano-concave, and convexo-concave lens.  Comes in a reusable cardboard storage box.

Available in 38mm, 50mm, or 75mm diameters.  Lenses in all sets have focal lengths of 150mm.