Esptronics 1 Pc 38mm Right Angle Glass Prism for Optical Accuracy, Photography, Scientific Solid Prism
Quick Overview
A right angle prism is an optical prism designed to deviate light by 90° or 180°, depending on the orientation of the prism and the face through which light enters. The joining edges and faces are perpendicular to the base faces, and all joining faces are rectangular.