Periscope is an optical instrument that uses the principle of light reflection. Through experiments, it is easier for children to understand the reflection of light. 360-degree rotatable lens, quickly disassembled and easily cleaned. Physics Experiment Optical Reflection School Teaching Tool. Specifications: Material: plastic and glass Size: app.30cm/11.81in black color Quantity: 1pc note: Please allow 0-1cm error due to manual measurement. Pls make sure you do not mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Periscope(other accessories demo in the picture is not included.)
