Water Flow Meter, Copper Mechanical Water Meter, Portable Water Flow Gauge, for Measuring Water Flow of Households or Gardens, with Mounting Accessories: Amazon.com: Industrial & Scientific
Fill-Rite 807C 3/4 in. Heavy Duty Mechanical Flow Meter w/ JME Install Kit (Gallons) - John M. Ellsworth Co. Inc.
Digital vs Mechanical Flow Meters - Comparing Flow Meters