Robust Aluminum Alloy: The Lightweight Aluminum GPS Survey Pole uses thickened solid aluminum alloy tubing, balancing lightweight design with high rigidity. The thickened pole effectively resists bending deformation in strong winds or muddy conditions, ensuring the pole remains straight during long-distance measurements and preventing data distortion due to swaying. Precision Threaded Quick-Release, Zero-Gap Locking: Each standard 1-meter section of the Surveying Aluminum Prism Pole uses a precision threaded quick-release connector. A simple half-turn rotation securely locks it in place, eliminating the swaying and gaps common in ordinary telescopic poles. You can freely combine sections to 2 meters, 3 meters, or 5 meters to meet your needs, achieving "one pole, multiple uses, length as desired." Steel Tip, Precise Measurement: The Sectional Prism Pole for Construction Layout, Foundation Elevation Measurement Tool allows for quick vertical calibration. Equipped with a wear-resistant steel tip at the bottom, it can be precisely inserted into corners, soft ground, or gaps, achieving "instant alignment upon contact" and significantly reducing measurement errors. Highly visible red and white paint, all-weather identification: The Measuring Rod features a classic red and white segmented paint scheme, ensuring clear positioning even in direct sunlight or dimly lit construction environments. The Detachable Centering Rod is waterproofed, making it suitable for damp and dusty conditions such as subways, tunnels, and dams, maintaining its vibrant color even after long-term use. Wide Range of Applications: The Aluminum Survey Pole can be used for land surveying, mapping, building layout, antenna extension, and engineering projects including subways, tunnels, dams, and slope protection. Compatible with total stations and levels., Manufacturer: Laohucai