A downhole tool used to measure the rate-of-flow and sometimes direction-of flow of borehole fluids. Usually these tools utilize impellers. During use the tools are run continuously with or against the direction of fluid flow. Sometimes the flowmeter measurements are made at stationary levels when fluid is diverted past the impeller blades by an inflatable packer. See also [[continuous flowmeter]], [[fullbore spinner flowmeter|fullbore-spinner flowmeter]], [[packer flowmeter]], [[spinner survey]], and [[radioactive tracer log|radioactive-tracer log]].