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
Oval Gear Flow Meter Diesel Heavy Oil Meter Mechanical Type High Precision Liquid Flow Meter With Pointer Display - Flow Meters - AliExpress
FILL-RITE 806C 1" Mechanical Flow Meter - Excel Equipment, LLC