• Periscope for classroom-- simple and easy to understand installation method, you can easily install it, bringing you a lot of convenience
• For Using-- with rotatable design, it is convenient for you to rotate to different angles to observe objects
• Professional periscope-- materials: detachable optics made of good materials, and excellent, practical and can be used for long time
• Periscope kit-- rotatable design - this periscope can be rotated freely, flexible and useful, which is convenient for you to rotate to different angles to observe objects.thoughtful design allows you to use the process without difficulty
• Rectangular duct-- detachable-- the light weight and detachable design make it easy to carry, portable and practical for outdoor activity