Accurate, reliable and easy-to-use.These top-of-the line water level meters provide features you’ve been asking for: a 3/8”W polyethylene tape line with black graduations permanently embossed; seven stranded stainless steel conductors in the tape line; light and audible buzzer which sounds when contact is made with water; external sensitivitiy control for varying water conductivity; and a sturdy, stand-alone reel with on/off switch, brake and carry handle (carrying cases are sold separately below).