Browse Our Selection › Optical Glass Rectangle: 3.9" (115mm) X 2.6" (65mm) X 0.7"(18mm), made of high quality optical glass Image 1 of 1 Optical Glass Rectangle: 3.9" (115mm) X 2.6" (65mm) X 0.7"(18mm), made of high quality optical glass $12.98 Product is for studying refraction and geometrical optics in physics and physical science classesOptical glass polished and worked on all surfacesGlass is free from bubbles and imperfectionsAll edges have slight bevelPerfect for teaching physics students the principles of refractionOptical Glass Rectangle: 3.9" (115mm) X 2.6" (65mm) X 0.7"(18mm), made of high quality optical glass Quantity: Add To Cart Added! Product is for studying refraction and geometrical optics in physics and physical science classesOptical glass polished and worked on all surfacesGlass is free from bubbles and imperfectionsAll edges have slight bevelPerfect for teaching physics students the principles of refractionOptical Glass Rectangle: 3.9" (115mm) X 2.6" (65mm) X 0.7"(18mm), made of high quality optical glass