1.water flow meter 2.no movable part,1 ... employees:50~100 people water flow meter,water meter2008 Improved type target Flow Meter SBL digital target flow meter is proprietary product independent ... adopt hang weight method to test the flow meter.Measurement range can be changed by replacing ... flow up-down or down-up, for ordering, please note: right view, left view (showing gauge head SBL water flow meter ...