【Measurement Specifications and Accuracy】: The well water level meter measures in centimeters, with a minimum reading of 1 mm and a repeatability of ≤ 2 mm. The probe has a depth range of 30 m/100 m, making it ideal for measuring well depth. The sensor at the probe tip provides stable measurement with virtually zero displacement. 【Portable Battery-Operated Design】: This electronic water level gauge is powered by a convenient 9V battery, making it ideal for construction and easy to transport without the hassle of plugging into a power outlet. 【Functional Materials】: Well Water Depth Meter with Fixed Probe Composed of four main components—a probe, steel cable, receiving system, and a reel—this meter ensures long-term and water-resistant performance, with easy-to-replace tape seals for maintenance. 【Operating Principles】: This portable water level gauge features a high-precision stainless steel probe for precise water depth measurement. When the probe enters the water, a circuit is closed, sending a signal to the reel, which emits a distinct beeping sound. Water level can then be determined by reading the tape directly from the well casing or borehole top. 【Versatile Applications】: Deep Well Water Level Meter for measuring water levels in wells, boreholes, reservoirs, and pipes, this water level meter is also valuable for hydropower projects and groundwater level observation, ensuring effective and accurate inspections.