Features Optical Glass Material: Made of optical glass, this prism offers excellent transparency and durability, providing clear and reliable measurement readings. Wide aperture range: With an aperture ranging from 0.2 to 1, this prism allows versatile measurements to be made, catering to various sizes and thicknesses of optical glass. FINISH AND OPENING - The prism features a smoothness of 60/40, which ensures minimal distortion and accurate measurement; irregular aperture from 0.1 to 0.3 improves accuracy. HIGH ACCURACY - This prism offers an angle range of 10-15 seconds, allowing accurate measurement of different angles and settings, for a wide range of applications. Fine Processing The optical glass lens is carefully polished and has a fine coating appearance, which greatly extends the life of the lens. 1. Optical Glass Material: Made of optical glass, this prism offers excellent transparency and durability, providing clear and reliable measurement readings. 2. Wide aperture range: With an aperture ranging from 0.2 to 1, this prism allows versatile measurements to be made, catering to various sizes and thicknesses of optical glass. 3. FINISH & OPENING: Prism features a smoothness of 60/40, which ensures minimal distortion and accurate measurement; 0.1-0.3 irregular aperture improves accuracy. 4. HIGH ACCURACY - This prism offers an angle range of 10-15 seconds, allowing accurate measurement of different angles and settings, for a wide range of applications. 5. Fine Processing The optical glass lens is carefully polished and has a thin layer in appearance, which greatly extends the life of the lens. Specification: Item Type: Tapered Prism Material: Optical glass. Aperture: 0.2-1 Irregular opening: 0.1-0.3 Softness: 60/40 Packing List: 1 x Conical Prism Package List 1 x Conical Prism