Feature 1360 DEGREE REFLECTING: The 360 degree prism has 6 separate prisms connected together, allowing the measurement beam to be reflected from any angle. 2STANDARD TOOL: The prism has a standard offset of +23.1mm and a effective diameter of 25.4mm, with a quick release button for easy connection. 3METAL HOUSING PROTECTION: Metal housing surrounds the top and bottom of the prism to preserve the glass and prevent the prism rod from flipping over at the top. 4RELIABLE MATERIAL: This prism tool adopts excellent K9 glass and ABS materials, capable of withstanding construction site environments, ideal for all machines that require measuring rods. 5WIDE USE: This 360 degree prism is widely used in various industries such as subways, railway, tunnel, dam, steep slope, etc.SpecificationItem Type: 360 Degree PrismMaterial: K9 Glass, ABSConstant: +23.1mmEffective Diameter: Approx. 25.4mm/1inApplication: Detection of tunnels, subways, mines, highways, etc. Suitable for measuring instruments such as for Trimble.Use: Widely used in various industries such as subways, railway, tunnel, dam, steep slope, etc. Package List1 x 360 Degree Prism1 x Storage Bag Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store