Alipis 2pcs Optical Concave Lens for Physics Experiments Double Concave Glass Lens for Classroom Use for Science Education and Optical Demonstrations

Package List 1 x cylindrical biconcave lens 1 x equilateral triangle lens Characteristics -Color:Transparent Optical Lens -Size: 6.00X5.00X1.00cm 2.36X1.97X0.39inch Optical Concave Lens -Material: glass Concave Glass Lens - The product can explain the knowledge of optics with experiments Concave Lens. - The product is well polished and does not hurt hands when used Physics Teaching Equipment Concave Lens. - The product is of material and Physics Optical Concave Lens. - Simple and generous product design Experiment Concave Glass Lens. - The products are convenient use Practical Concave Glass Lens.Goods DescriptionOptical Experiment Glass Concave Lens The package include one cylindrical biconcave lens and one equilateral triangle lens.Optical Lens It could be used in classroom, laboratory and school.Concave Lens This item is a kind of scientific experimental apparatus.Optical Lens for is made of glass material, which is safe and to use

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