Description This Save a Drop brand Water Meter is made by P3 International and helps prevent over watering. It is also great for measuring how much water you are putting in your camper’s water tank. This meter is extremely accurate; it measures water usage to 1/10 of a gallon. It calculates single water use and total water consumption. It features an easy-to-read LCD display and a rugged, waterproof housing. This version has an upgraded heavy duty brass hose swivel.