DescriptionDo you want your students or children to measure the refractive index of glass? Then, you must not miss our optical triple-prism . Made of glass material, it is safe and durable. Suitable for home, school, and other places in need.Features- Material: Glass - It has a simple design, but very practical in use, giving you a good using experience. - It can be used for measuring the refractive index of glass. - Precise cuttings and wonderful detail design, offer good reflections and color separation, excellent performance. - Light in weight and portable, the optical triple-prism is easy to carry and storage.- Can help students learn and understand more specifically how to find the principle of light convergence.