This electric contact gage is used for measuring the depth of water in wells, boreholes, standpipes and bridge tape downs during discharge measurements. The Flat Tape Water Level Meter is reliable, accurate and easy to operate and read to 1/100 ft. or mm. The Model 1010 Water Level Meter uses a well-designed probe, attached to a permanently marked polyethylene tape, fitted on a well-balanced reel. The conductors embedded within the tape each have seven strands of stainless steel. The probe incorporates an insulating gap between electrodes. When contact is made with water, the circuit is completed, sending a signal back to the reel. This activates a loud buzzer, and a light. Features: Accurate markings each 1/100 ft., 1/2", cm or mm sensitivity adjustable to conductivity shielded probes to avoid false readings lengths up to 3000 ft. (900 m) Reliable permanent, hot stamped markings stranded stainless steel conductors rugged, free standing reel standard 9V battery The design of the tape prevents it from adhering to wet surfaces in boreholes and wells. Markings are permanently embossed onto one side of the tape and are available in your choice of scales. The tape can also be printed on both sides. English graduations are in feet, 10ths and 100ths. Metric graduations in meters, decimeters, centimeters and millimeters.