Features 【Excellent Aluminum Alloy Material】This total station rotating optical prism is made of excellent aluminum alloy material wrapped around the lens, which is wear resistant and drop resistant. 【Rotating Protective Cover】This right angle optical prism features a rotating protective cover that can be rotated to easily expose the pentagonal prism and allows front view viewing through the center lens. 【Handle Design】This total station rotating optical prism land surveying equipment features a handle design with a slot in the handle for mounting a plumb for Bob line center lens for forward looking observation. 【Wide Application】This double right angle lasers levels accessories is widely used in subways, railroad, tunnel, dam, steep slope and many other industries. 【Leather Sleeve】This total station rotating light prism comes with a leather sleeve that can be used to store the prism when not in use to prevent it from being scratched. 1. Excellent Aluminum Alloy Material: This total station rotating optical prism is made of excellent aluminum alloy material wrapped around the lens, which is wear resistant and drop resistant. 2. Rotating Protective Cover: This total station rotating optical prism features a rotating protective cover that can be rotated to easily expose the pentagonal prism and allows front view viewing through the center lens. 3. Handle Design: This total station rotating optical prism features a handle design with a slot in the handle for mounting a plumb for Bob line center lens for forward looking observation. 4. Wide Application: This total station rotating light prism is widely used in subways, railroad, tunnel, dam, steep slope and many other industries. 5. Leather Sleeve: This total station rotating light prism comes with a leather sleeve that can be used to store the prism when not in use to prevent it from being scratched. Specification: Item Type: Total Station Rotating Optical Prism Material: Optical Glass, Aluminum Alloy Application: Tunnel, subways, Mine, Highway and Other Testing, Applicable to for Leica and Other Measuring Instruments Use: Widely used in subways, railroads, tunnels, dams, steep slopes and many other industries. PackageList: 1 x Total Station Rotating Optical Prism 1 x Leather Sleeve Package List 1 x Total Station Rotating Optical Prism 1 x Leather Sleeve