Target meters sense and measure forces caused by liquid impacting on a target or disk suspended in the liquid stream. A direct indication of the liquid flow rate is achieved by measuring the force exerted on the target. In its simplest form, the meter consists only of a hinged, swinging plate that moves outward, along with the liquid stream. In such cases, the device serves as a flow indicator. More sophisticated version uses a precision, low-level force transducer sensing element. The force on the target caused by the liquid flow is sensed by a strain gage. Target meters are useful for measuring flows of dirty or corrosive liquids. They are relatively inexpensive and offer 10:1 flow ranges with accuracies of 0.5% to 1.0% of full scale.