Water level indicators

Used for determining the water level in boreholes, wells and other open underground structures. Drum mounted, with an ON/OFF indicator and audio signal when probe touches water. The sensing portion of the probe has a stainless steel tip with plastic shielding to prevent false readings. Probe diameter of 10 mm allows an easy passage through ½” tubing. Cable is marked at 1 cm intervals.
Battery operated: 9 V DC