DOUBLE CONVEX
Highly polished, double convex lens SPHERICAL
Lens measures 1.5" (38mm) in diameter is approximately 3mm thick 250MM FOCAL LENGTH
Converging lens with a 250mm focal length OPTICALLY WORKED GLASS
Made of high quality, optically worked glass. Highly polished with ground edges GREAT FOR PHYSICS CLASSROOMS
This optically true lens is excellent for physics classroom demonstrations in optics and light refraction
Highly polished, double convex lens SPHERICAL
Lens measures 1.5" (38mm) in diameter is approximately 3mm thick 250MM FOCAL LENGTH
Converging lens with a 250mm focal length OPTICALLY WORKED GLASS
Made of high quality, optically worked glass. Highly polished with ground edges GREAT FOR PHYSICS CLASSROOMS
This optically true lens is excellent for physics classroom demonstrations in optics and light refraction