AbsolutelyNew Water Saver Usage Meter
The Water Saver lets you easily monitor and conserve water usage. It screws onto the end of a garden hose and features a large LCD screen that clearly shows the usage volume in gallons or liters. Great for lawn & garden care, car washes, and more. It also features a Reset button to clear the cumulative total, as well as to switch between gallons and liters before each use. A 10-second auto-shutoff helps save battery power. Fits standard hoses, spray-nozzles, and outdoor faucets.  Recommended by the National Home Gardening Club.