Light and durable extruded aluminum alloy in anodized sections imprinted in easy-to-read graduations of feet, inches, and 1/8ths with special weather resistant and corrosion resistant inks. Special measuring scale on backside permits users to read heightat eye level. Tight tolerances offer smooth extension and prevent unnecessary clattering and sloppiness. Sectional joints, injection-molded from durable, lightweight impact-resistant plastic have reliable, wear-resistant, polycarbonate locking buttons. 8 ft rods in 3 sections, 13 ft in 4 sections.