AdirPro 20-Foot Fiberglass Rectangular Leveling Rods - 8ths, 5 Section Telescopic Carrying Case Choice of Feet/10ths or Feet/8ths, Top section has a 5/8 x 11 female thread to attach a mini prism. Non-Conductive, Rectangular Shape, Scale on Back Allowing Overall Height Reading Five Adjustable Sections, Secure Locking Buttons, Perfect for Laser Detector Wear-Resistant Scales, Water-Resistant and Corrosion-Resistant 1-Year Warranty