Specification AgeRangeDescription : little_kid Brand : Emoshayoga BulletPoint1 : Portable: Small size, light weight, easy to carry, excellent teaching aid for teachers. BulletPoint2 : Educational Devices: Educational grade optics for fundamental research in geometric optics. BulletPoint3 : Applicability: This optical lens is ideal for physics classroom demonstrations of optics and light refraction. BulletPoint4 : Material: Meniscus lenses are made of high grade optical glass with high accuracy. BulletPoint5 : Clear Imaging: The length can up to ‑30.97, the imaging is clear, highly polished, and edged. Color : #411 Department : Unisex Adult ExternallyAssignedProductIdentifier : 8658769782730 ItemDisplayDimensions_Height : 1.18 centimeters ItemDisplayDimensions_Length : 4.13 centimeters ItemDisplayDimensions_Width : 2.76 centimeters ItemDisplayWeight : 0.18 pounds ItemName : Emoshayoga Meniscus Lens, Concave Convex Lens Set Small High Precision Educational Devices for Physics Teaching ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 15 centimeters ItemPackageDimensions_Width : 8 centimeters ItemTypeKeyword : science-classroom-optics-kits Manufacturer : Emoshayoga Material : H-LAF53Glass ModelName : Emoshayogagrah1ni38m ModelNumber : Emoshayogagrah1ni38m NumberOfItems : 1 NumberOfLithiumMetalCells : 1 PartNumber : Emoshayogagrah1ni38m Pattern : Solid ProductDescription : 1. Material: Meniscus lenses are made of high grade optical glass with high accuracy. 2. Clear Imaging: The length can up to ‑30.97, the imaging is clear, highly polished, and edged. 3. Applicability: This optical lens is ideal for physics classroom demonstrations of optics and light refraction. 4. Educational Devices: Educational grade optics for fundamental research in geometric optics. 5. Portable: Small size, light weight, easy to carry, excellent teaching aid for teachers.