Triangle Portable Telescopic Insulated Height measuring rod/stick: It is made of glass fiber cloth, epoxy resin, 306 resin phthalic anhydride, fiberglass fiber cloth and curing agent. After a second high temperature and then first set on the mold, then remove the mold, after a second high temperature grinding, a rough grinding, two fine grinding, and then lacquered into other FRP products, beautiful appearance, lightweight structure, easy to operate, It has excellent mechanical and electrical properties and is suitable for use under various high pressure conditions. It has good insulation performance and is safe to use. It is with the property of light weight, high strength and high insulation.