ITEM NAME:-50mm Concave Lens Optical Glass for Physics Optics Learning Experiment Toys Description: Optical glass lens, laboratory optical bench accessory Science experiment - exploring optical property, Early physics science educational toy for kids children student Student pupil teaching Aidsï ¼Å’the fun of the lenses learning science knowledge kid science development toys, a series of physical science boarden kids and children , stimulating their curiosity Material: Optical Glass, Plastic Frame Colorï ¼Å¡As picture show Size Chart: Concave Lens Diameter: 30mm Focal Length: -50mm Handle length : 12.5cm/ 4.92 inch Package Includes: 1 piece Optical Glasses Len Toy Note: Please allow 1-3mm error due to manual measurement, make sure that you do not mind before you.Optical glass lens, laboratory optical bench accessory. Student pupil teaching Aidsï ¼Å’the fun of the lenses learning science knowledge. 1 piece Optical Glasses Len Toy. Due to the different monitor and light effect, the actual color may be slightly different from the picture color.
