mõõtevahend vedeliku või gaasi ajaühikule vastava vookoguse mõõtmiseks, measuring instrument used to measurement the flow rate or quantity of a gas or liquid moving trough a pipe, type of flow instrument that is used to indicate the amount of liquid, gas, or vapor moving through a pipe or conduit by measuring linear, non-linear, mass, or volumetric flow rates, flow measuring device which indicates the measured flowrate