The Fisher WLT is a professional-grade water level indicator designed for technicians and field engineers who require accurate measurements in wells, boreholes, and standpipes. Built for ease of use and long-lasting performance, it provides precise audio and visual alerts the moment the probe contacts water. Its standout feature is guaranteed ±0.4% accuracy, even in challenging conditions like mineralized or oil-contaminated water.
Engineered for reliability in field environments, the WLT features crimped brass depth markers at consistent intervals and a flexible brass electrode for repeatable results. An intuitive toggle switch enables battery checks and simple operation, while a bright LED and audible beep confirm contact with water. Available in multiple cable lengths (100–500 ft or 50–150 m), the WLT suits a range of applications, from routine monitoring to draw-down testing. Special instructions ensure continued performance in mineralized water or oily conditions.
Housed in a lightweight yet durable spool, the WLT is designed for portability without compromising strength. It runs on a single 9V battery with efficient power usage and minimal maintenance. Optional hard cases provide added protection for rugged deployments. Whether you're performing groundwater studies or utility inspections, the Fisher WLT delivers trusted performance backed by over 85 years of Fisher engineering excellence.
