Fill-Rite TS 2 in. NPT Oval Gear Meter w/ Mechanical Register (Liters), Strainer, and Air Eliminator - John M. Ellsworth Co. Inc.
Positive Displacement Oval Gear Flow Meter DON-H - Industrial measuring and control equipment in the field of flow, pressure, level & temperature | Kobold Messring GmbH
Oval wheel meter in industrial measurement | Bopp&Reuther Messtechnik
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
Oval Gear Meter Working Principle - InstrumentationTools