Glass Lenses - Double Convex, dia 50mm, focal length 200mm

Glass Lenses - Double Convex, dia 50mm, focal length 200mm focal length 200mm Double Convex Spherical, lenses made of extra white glass with ground edges, highly polished.Spherical,

Glass Lenses - Double Convex, dia 50mm, focal length 200mm ALTEC Laboratory Equipments and ALTEC Laboratory Instruments Tenders.