Liquid Flow Meter - Plastic 1/2 NPS Threaded : ID 828 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Sage Prime Thermal Mass Flow Meter - Sage Metering
Oxygen Gas Mass Flow Meter (plus Kit) 5300-4 | TSI
Digital Turbine Flow Meter Digital LCD Display with NPT Counter Gas Oil Fuel Flowmeter for Measure Diesel Kerosene Gasoline (1 Inch): Amazon.com: Industrial & Scientific
Bonvoisin Turbine Flow Meter 1" FNPT Inlet/Outlet Fuel Flowmeter ±1% Accuracy LCD Display Flow Meter for Diesel Kerosene Gasoline 2-26.4 GPM /9-100 LPM(Batteries are not Included): Amazon.com: Industrial & Scientific
CGOLDENWALL 1inch Water Flow Meter 1" Digital Fuel Flowmeter Inline, 1" FNPT Inlet/Outlet, Measuring Range 2.5-26GPM, Flow Meter for Water Diesel Kerosene Gasoline, 1inch: Amazon.com: Industrial & Scientific
Water Flow Meters | Pentair AES
Air Gas Mass Flow Meter (plus Kit) 5310-1 | TSI
Hydracheck - Inline Flow Meter - Petroleum Fluids - One Way Flow
Digital Fuel Flow Meter by Flows.Com
4000 Series Analog and Digital Flow Meters | TSI
uxcell s14070200am8595 1/2" PT Thread 0.05-0.5GPM 0.2-2LMP Water Liquid Flow Meter Flowmeter: Science Lab Flowmeters: Amazon.com: Industrial & Scientific
Low cost hall effect water flow sensor,Food safe meter
Air / Oxygen Gas Mass Flow Meter (plus Kit) 5320-2 | TSI