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.
Check your grammar now! : an apparatus for heating or cooling (as a building) by transferring heat by mechanical means from or to an external reservoir (as the ground, water, or outside air)