Features 64MM PRISM LENS: This pyramid prism has 64mm glass lens with bright texture, providing high measurement accuracy and work efficiency. OPTICAL GLASS LENS: The prism lens is made of optical glass, with fine polishing and a uniform and delicate coating to ensure good durability. GOOD PERFORMANCE: With exquisite workmanship, the lens is transparent, uniform, and delicate, with small errors and high qualification rate. PRISM SPECIFICATION: This optical glass prism has an aperture of 0.2‑1, an irregular aperture of 0.1‑0.3, and a comprehensive angle of 2‑8 minutes. APPLICATION FIELDS: This conical prism is widely used in component surveying, optical catching and drilling, and other precise industries. Specification: Item Type: Pyramidal Prism Material: Optical Glass Aperture: 0.2-1 Irregular Aperture: 0.1-0.3 Finish: 60/40 Comprehensive Angle: 2-8 minute Package List:1 x Pyramidal Prism Package List 1 x Pyramidal Prism