Weather-resistant alloy steel construction: This survey prism pole is rainproof dustproof and wear-resistant ensuring reliable performance in harsh outdoor environments like construction sites and mapping projects. Quick assembly with threaded joints: Each 1-meter section features secure threaded joints for fast tool-free assembly. Mix and match sections to achieve custom lengths of 2 3 4 or 5 meters for versatile use. Stable ground positioning: The sharp tip securely anchors into the ground providing stable positioning for marking surveying and height measurement applications on various terrains. Versatile engineering applications: Ideal for surveying construction rail transit and water conservancy projects this prism pole adapts to diverse tasks from topographic mapping to road engineering. Reliable performance in complex terrain: Designed to maintain stability on uneven ground this essential tool excels in road engineering architectural surveying and topographic mapping projects.