Specification Brand : CXCTCT BulletPoint1 : [OPTICAL GLASS MATERIAL] Meniscus lenses are crafted from high-grade optical glass to ensure exceptional accuracy. BulletPoint2 : [EDUCATIONAL DEVICES] Ideal for fundamental research in geometric optics, providing educational grade optics for classroom demonstrations. BulletPoint3 : [CLEAR IMAGING] With a focal length of up to 39.6, this lens delivers clear, highly polished imaging for detailed observations. BulletPoint4 : [PORTABLE MINI] Compact and lightweight design makes it easy to carry, serving as an excellent teaching aid for educators. BulletPoint5 : [APPLICABILITY] for showcasing optics and light refraction in physics classrooms, making it a versatile educational tool. ItemName : Clear Imaging Optical Glass Lens Meniscus Lens High Accuracy for Physics Classroom Demonstration ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 6 centimeters ItemPackageDimensions_Width : 6 centimeters ItemTypeKeyword : science-classroom-optics-kits Manufacturer : CXCTCT ModelName : SK-05_pack of 7 ModelNumber : CXCTCTxcg3641noh NumberOfItems : 1 PartNumber : CXCTCTxcg3641noh ProductDescription : [OPTICAL GLASS MATERIAL] Meniscus lenses are crafted from high-grade optical glass to ensure exceptional accuracy. [EDUCATIONAL DEVICES] Ideal for fundamental research in geometric optics, providing educational grade optics for classroom demonstrations. [CLEAR IMAGING] With a focal length of up to 39.6, this lens delivers clear, highly polished imaging for detailed observations. [PORTABLE MINI] Compact and lightweight design makes it easy to carry, serving as an excellent teaching aid for educators. [APPLICABILITY] for showcasing optics and light refraction in physics classrooms, making it a versatile educational tool. Spec: Item Type: Concave Convex Lens Material: Glass Model: AT025 Uses: Optical Appliances Focal Length: 39.6 Package List: 1 x Lens Note: