Material: This L Bar Right Angle Prism is made of metal, ensuring durability and long term performance Clear Accurate: Enhance the reflection ability of prism, possess full texture, clear and bright, improve the accuracy of measurement, measurement work become more simple 3~4' Accuracy: Consistent and precised measurements, meeting the high standards of surveying professionals Mini Prism Head: 90 Degree L Bar Prism features a mini prism head that enhances the accuracy of measurements and ensures reliable results every time Versatile Use: Right Angle Prism for Total Station can be used for tunnel, subway, mine, highway detection, etc., suitable for measuring instruments, widely used in railway, dam, steep slopes and other industries Specification: Material: Metal Size Chart: 60x75mm/2.36x2.95inch Package Includes: 1x L-shaped Right Prism or 1x L-shaped Right Prism with screw or 1x L-shaped Right Prism with rod or 1x L-shaped Right Prism with bracket Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful online shopping!