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Rainwave RW-9FM Digital Water Flow Meter$16.03
PERFECT FOR MEASURING: Measure how much water it takes to fill up your pool or water the plants in your garden. GREAT FOR RVs. DIGITAL DISPLAY: Easy-to-read LCD screen displays your water usage in gallons or liters.
KNOW THE FLOW: Calculates both single-use and total water consumption. STANDARD CONNECTION: Fits 3/4-inch standard outdoor hoses and faucets.