Sokkia SK Level Rods, Unique patented oval shape permits equal size graduations full-length, prevents rod from rolling and is easier to hold. Numerals and graduations are epoxy-protected for maximum wear-resistance and sized for maximum readability. Sections cushioned with glides to prevent wear. Linear accuracy exceeds 1 in 4,000. Made from strong, corrosion-proof fiberglass that is lightweight and won’t warp or swell. Rods have height measuring gauge on back side. Female threaded hole (⅝ x 11 in.) on top for mini-prism. 807344 18 ft. SK Rod, 5 sections, ft./10ths 807348 25 ft. SK Rod, 7 sections, ft./10ths 807368 25 ft./7m in length, 7 sections, meters/decimeters/½ centimeters