Eisco PH0538A - 50mm Glass Lenses with Wooden Storage Box - Set of 6

An optical lens set of six 50mm diameter glass lenses. The lenses have ground and polished faces and ground edges. The set includes one of each of: double convex, plano-convex, converging concave-convex, diverging concave-convex, double concave and plano-concave.

* Glass lens set * Lens diameter 50mm * Focal length - plano-convex and plano-concave: 25cm * Focal length - other lenses: 20cm * Wooden storage box with hinges and latch * Eisco type PH0538A