EISCO Double Concave Lens, 200mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms
$17.99
Description
DOUBLE CONCAVE || Highly polished, double concave lens.SPHERICAL || Lens measures 3" (75mm) in diameter.200MM FOCAL LENGTH || Diverging lens with a 200mm 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
