Basic Optical Presenter Products Category : Optical Products > Optical Instruments INQUIRY Details A 40cm-aluminum Rails, top with iron tablets, With 360°rotating disc, five-line light source, semicircular, bi-convex, bi-concave, trapezoid, semi-circular, triangular, strips and three-mirror lens. A magnet on the back. Send Inquiry Name:* E-mail:* Tel: Content:* Verification Code:* (All * must be filled in) [ Previous: ] Related Products Three-Color Light Source E Three-Color Light Source A Polarization of The Light Optical Moire Suit Newtons Rings(Metal Frame) Linear Laser Light Source Lens Imaging Light Refraction and Reflection