Kobold DON-H Series Oval Gear Flow Meter | Positive Displacement Flow Meters | Instrumart
Turbine Flow Meter Electronic 3/4" 3/4 inch 10-100L/Min Oil Flowmeter Kerosene Gas Methanol Diesel Fuel Flow Digital Meter Oval Gear Gauge LCD BSPT/NPT with Battery: Amazon.com: Industrial & Scientific
KOBOLD Instruments DON-245GNB DON Oval Flow Meter, Stainless Steel, 3" NPT, 10-200 GPM - FLW, Inc.
Oval Gear Flow Meter Installation And Troubleshooting - CrossCo