Below is a list of Fuel Flow Meter manufacturers from St. Louis, Missouri. Fuel flow meters are an essential part of any engine used in transportation, although they are often essential in stationary pumps as well. Capable of metering diesel fuel, gasoline, kerosene, mineral spirits, stoddard solvent and heptane, fuel flow meters measure the rate of fuel flow into an engine, consequently calculating the engine's current rate of fuel consumption and the remaining amount of fuel left in the tank.