Submersible stainless steel probe
Nylon or aluminum reels (for tapes longer than 150 m or 400 ft) mounted on sturdy polyurethane-coated steel frames
Available in metric or U.S. units in lengths up to 600 m (2,000 ft)
Accuracy to each millimeter or 0.01 foot
Breaking load over 45 kg (100 lbs)
DC to AC conversion prevents corrosion and mineral buildup on probe
Sensitivity dial filters out false signals from falling water
Removable, sealed electronics module
Security link protects tape by releasing the probe if it becomes stuck in the well