Water Level Indicator, 300 meters (Water Tape) Tape markings - Feet and 1/00ths or Meters and millimeters Durability - Strong Kevlar reinforced polyethylene measuring tape with stainless steel conductors (300 lb breaking strength) Accessibility - Full depth rated probe, 5/8-in (16 mm) dia. stainless steel and Teflon construction Reliability - 3-year limited warranty