The Rugged Water Level Tape 200 is the premier engineer-grade tape designed for groundwater professionals, with high-tensile steel tape and stainless steel conductors. The tape is ASME-certified and offers maximum longevity in the field, ideal for measuring depth-to-water in wells, boreholes, direct push equipment and standpipes. The tape signals the water level with a bright LED flash and loud buzzer. When the probe is lowered to the water level, the water acts as the on/off switch. Yellow tape is easy to read and resists stretching under loads of 150 kg (330 lbs).