Features 【Exquisite Polishing For Superior Quality】The optical glass prism is meticulously polished with a uniform and fine copper coating, ensuring exceptional lens quality and durability for precise measurements. 【Compact And Accurate Design】With a 17.8mm diameter, this corner prism cube offers a bright texture and high precision, making it ideal for accurate and efficient surveying tasks. 【Strict Manufacturing Standards】This trihedral retroreflector undergoes rigorous processing, resulting in minimal standardized errors and a high pass rate, ensuring performance in professional applications. 【 And Stylish Copper Coating】The copper coated outside of this corner prism not only enhances its durability but also adds a , professional design suitable for demanding environments. 【Wide Range Of Applications】This versatile corner prism is compatible with various optical instruments, making it an essential tool for surveying professionals and optical measurement tasks. 1. EXQUISITE POLISHING: The optical glass lens is carefully polished, and the uniform and fine coating on the outside can ensure the quality of the lens 2. SIZE INFORMATION: This prism has a diameter of 17.8mm glass lens, possess bright texture, providing measurement accuracy and efficiency 3. ACCURATE PROCESSING: Corner prism lenses are transparent, after strict manufacturing, standardized error is small, with high pass rate 4. COPPER COATED: The copper coating of corner cube prism enhance durability and stylish design 5. WIDE APPLICATIONS: Plated corner prism is compatible with various optical instruments, making it versatile for surveying professionals Spec: Item Type: Corner Prism Material: Optical glass Aperture: 0.2~1 Irregular Aperture: 0.1~0.3 Finish: 60/40 Integrated Angle: 2s~8s Diameter: Approx. 17.8mm / 0.7in PackageList: 1 x Corner Prism Package List 1 x Corner Prism