A Nutrition Consultant in the Houston, TX Area area reported making $34,000 per year
Water level (device) A water level is a device used for matching elevations of locations that are too far apart for a spirit level to span. The simplest water level is a section of clear tubing, partially filled with water. Water is easily procured for use, and easily discarded after use.
See also. 1  Air ionizer, a different device for conditioning air. 2  Atmospheric water generator, a machine that extracts pure drinking water from air. 3  Food dehydrator, device for decreasing moisture in food, to prevent spoilage. 4  Humidifier, an appliance that increases the humidity of air. 5  Thermoelectric cooling.