Features PLASTIC SHELL: The shell of the prism reflector is made of excellent ABS plastic, ensuring that the glass prism is not worn, sturdy and durable. SPECIFICATIONS: Total station reflector, single prism design, the glass diameter is 25.4mm, and the prism constant is ‑17mm, compact and practical. OPTICAL GLASS: The reflector lens uses excellent optical glass, with fine polishing and delicate coating, to extend the service life of the prism. THREAD ADAPTER: There is a brass threaded adapter on the single prism, which can be connected to any standard 5/8inx11 threaded rod or tripod. APPLICATIONS: The total station reflector is widely used for tunnel, subway, mine, highway, dam, and steep slope surveying, with strong practicality. Specification: Item Type: Total Station Reflector Material: ABS Glass Diameter: Approx. 25.4mm / 1in Prism Constant: -17mm Application: Testing of tunnels, subways, mines, highways, etc. Suitable for measuring instruments such as total station. Use: Widely used in subways, railways, tunnels, dams, steep slopes, and other industries. Package List: 1 x Total Station Reflector Package List 1 x Total Station Reflector