Feature: 1. COMPACT AND PORTABLE: This total station mini prism is small in size, compact in structure, easy to carry, convenient to use, and seamless with measuring instruments 2. CLEAR AND LONG LASTING: The 360 total station measuring prism is made of K9 glass and aluminum materials, clear and efficient, and will hold up in the harshest conditions for years to come 3. FAST AND EFFICIENT: The 360 measuring prism provide 360 degree reflection to ensure fast tracking and locking of the instrument, suitable for measurement and mapping 4. APPLICABLE SCENARIO: Universal prism is widely used in railway, dam, steep slope and other industries measurement, easy to use and practical 5. APPLICABLE MODEL: L bar 360 degree prism is suitable for Trimble total station, for SOKKIA and other measuring instruments, very versatile Specification: Item Type: 360 Degree Prism Material: K9 glass and aluminum Prism Offset: +30mm Constant: -29mm Effective Diameter: Approx. 25.4mm / 1in Application: For Sokkia, for Trimble, etc. Use: Widely used in subway, railway, tunnel, dam, steep slope, mines, highways, etc. . Package List: 1 x Total Station Prism 1 x Storage Bag