Feature:1. FINE WORKMANSHIP: Optical glass accuracy detection, K9 premium glass cutting and careful polishing, measurement more accurate and durable.2. LONG SERVICE LIFE: Premium oxidized plastic wrapped lenses are wear resistant and fall resistant, greatly improving its service life.3. WATERPROOF PRISM: This total station right angle prism possesses excellent waterproof performance, withstanding different tunnels environments, use with confidence!4. EASY TO CARRY: Small size and lightweight make the prism easy to carry for convenient use, suitable for different uses.5. WIDE APPLICATION: Widely used in various industries such as subways, railways, tunnels, dams, steep slopes, etc.Specification:Item Type: Total Station Right Angle Prism Material: Optical Glass, ABSSpecification: Waterproof TypeConstant: Approx. -25mm / -0.98inEffective Diameter: Approx. 25.4mm / 1inScope of Application: Testing of tunnels, subways, mines, highways, etc. Suitable for Leica and other measuring instrumentsApplication: Widely used in various industries such as subways, railways, tunnels, dams, steep slopes, etc..Package List:1 xTotal Station Right Angle Prism