Round Double Convex High Optical Purity Glass Lens - 2" (50mm) Diameter - 50mm Focal Length - 15mm Thick Approx. - Eisco Labs sold2025 Height:181

Height:181

the durable and light weight frame don't make kids feel uncomfortable after long-time wearing

It is really a necessity for your journey sleeping

1 box with 12 compartments filled with 12 multi-colors (glue on bottom)

Each pack contains 5 meters (16

Round Double Convex High Optical Purity Glass Lens - 2" (50mm) Diameter - 50mm Focal Length - 15mm Thick Approx. - Eisco Labs sold2025 Height:181Round Double Convex High Optical Purity Glass Lens 2" (50mm) Diameter 50mm Focal Length 15mm Thick Approx. Eisco Labs Round double convex high optical purity glass lens designed for physics and educational uses. Product Features This round double convex high optical purity glass lens is designed for physics and educational uses. It is approximately 2" (50mm) diameter and 15mm thick. Note, thickness varies as they are not designed to be consistent in