Periscope, 1 Each

The Periscope by United Scientific is a handheld periscope designed to show students the reflective qualities of light. It has an outer case with mirrors at each end set parallel at a 45-degree angle, and measures 8 in x 2 in x 2 in. Science teachers use it in introductory optics lessons to demonstrate the law of reflection and how two mirrors redirect a line of sight.