50mm Diameter Double Convex Spherical Lenses - Rapid PH30067/2, Double-convex spherical lens with a focal length of 100mm. Rapid Double Convex Spherical - Diameter 50mm - Fl 100mm
50mm Diameter Double Convex Spherical Lenses - Rapid PH30067/1, Double-convex spherical lens with a focal length of 50mm. Rapid Double Convex Spherical - Diameter 50mm - Fl 50mm
50mm Diameter Double Convex Spherical Lenses - Rapid PH30067/9, Double-convex spherical lens with a focal length of 1000mm. Rapid Double Convex Spherical - Diameter 50mm - Fl 1000mm