Features EXCELLENT TRANSPARENCY AND FLAWLESSNESS: The prism lens has outstanding transparency, with a flawlessness surface that allows for clear and accurate measurement. ACCURATE MEASUREMENT: With a glass lens diameter of 17.8mm, this prism offers exceptional measurement accuracy. Its bright and clear texture enhances the accuracy and efficiency of measurements, making it a reliable tool for various applications. CONVENIENT DESIGN: The corner cube prism is designed to be user friendly, with a compact and lightweight form factor that is easy to handle and transport. Its smoothly design ensures optimal ease of use without sacrificing performance. VERSATILE APPLICATIONS: The corner cube prism finds versatile applications in various fields such as surveying, mapping, optical experiments, and scientific research. Its premium glass lens and accurate measurement capabilities. OPTICAL GLASS LENS: The optical glass lens of the prism undergoes meticulous polishing, ensuring a smoothly and uniform surface. The lens is coated with a fine and even coating, guaranteeing superb performance. Specification: Item Type: Corner Cube Prism Material: Optical Glass Aperture: 0.2 to 1 Irregular Aperture: 0.1 to 0.3 Finish: 60/40 Integrated Angle: 2s to 8s Diameter: Approx. 17.8mm / 0.7in Package List: 1 x Corner Cube Prism Package List 1 x Corner Cube Prism