Feature 1Premium Glass Component: This mini prism uses high end glass component that is precisely ground to ensure accurate positioning and exceptional durability. 2High Accuracy: Designed for land surveying with total stations, this prism minimizes errors and guarantees millimeter accuracy. 3Aluminum Alloy Construction: Made from sturdy aluminum alloy, this prism reflector offers excellent durability and long lasting performance. 4Compact and Portable: With its compact size, this prism is easy to carry and convenient for on the go land surveying or monitoring tasks. 5Widely Applicable: This reflective prism is widely used in various applications such as subways construction, railways projects, tunneling, dam monitoring, and steep slope measurements.Item Type: Large Monitoring Reflective PrismMaterial: K9 glass, aluminum alloyApplication: Testing of tunnels, subways, mines, highways, etc.Use: Widely used in various industries such as subways, railways, tunnels, dams, steep slopes, etc. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Large Monitoring Reflective Prism