Holder Size: H 1.4 in. x W 1.4 in. x D 1.6 in. Tray Size: H 0.2 in. x W 11 in. x D 2.5 in. Material: Brass, Glass
*Note: "I made a hole in a glass prism to check the refractive index of light. Since it is rougher than general optical parts for teaching materials used in Indian schools, it may have scratches, chips, bubbles, etc."