100m 200m 500m Portable Ruler Water Level Meter Sensor Deep Well Water Level Gauge

The steel ruler water level meter provides the most accurate way to measure water levels, used to measure the water level in wells, boreholes and water pipes, particularly suitable for the observation of groundwater level in hydropower projects and artificial inspection of dam body infiltration line. The instrument can be used during construction, but also as a long-term safety monitoring with the project, complies with earth dam safety monitoring technical specifications. Detail pictures:1. Probe Small probe, portable. When it detect water, the led light on and buzzer buzzing. 2. Carrying handle Strong and stable carring handle. 3. Ruler Clear ruler, easy to see level height. And durable. 4. Power voltagePower voltage, this show the battery power. 5. Battery9V battery. 6. Place probe.Where the probe is placed after use. 7. KnobUnscrew it when you use it, and fix it when you don't need it. 8. Two gears First gear for normal environments, second gears for noisy environments./* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1