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PRM 1 Inch NPT Multi Jet Water Meter with Pulse Output, Brass Body - Not for Potable Water: Amazon.com: Industrial & Scientific
Plastic Water Meters - WM-PC Series by Flows.com
DAE AS250U-100P 1" Water Meter with Pulse Output, Measuring in Gallon + Coupling: Amazon.com: Industrial & Scientific
What Is a Water Meter and How Do I Read One? – Fresh Water Systems
Combination Water Meter Kit with pH Probe – Sper Scientific Direct
Amazon.com: Water Flow Meter, High Accuracy Digital Hose Water Meter, Stainless Steel Garden Hose Flow Meter Measure Gallon/Liter Water Flow Rate for Garden, Fish Pond, Swimming Pool, Farmland Irrigation : Patio, Lawn