Surveying Instrument Surveying Equipment, Laser Scanners Laser Trackers Lidar Slam, Total Stations Reflectorless Total Stations manufacturer / supplier in China, offering Geomaster 20mm Dia. × 200mm Long Galvanized Convergence Bolt with Universal Adaptor 5/8"for Mounting Bi-Reflex Targets and Prism Holders & Targets, Geomaster 20mm Dia. × 250mm Long Galvanized Convergence Bolt with Universal Adaptor 5/8"for Mounting Bi-Reflex Targets and Prism Hoders & Targets, Geomaster 20mm Dia. × 250mm Long Galvanized Convergence Bolt with Adaptor (M12) for Bi-Reflex Targets and so on.