Flow Meters
Johnston Inc. is proud to represent the following manufacturers. Links to the manufacturers' sites are provided.
Open Channel Recording Bubbler, Ultrasonic and Submerged Probe Ultrasonic Transmitter, Area /Velocity, Acoustic Doppler (Insertion
and Open Channel), Pump Station Monitors.
FRP Flumes and Packaged Metering Manholes
UniMag™ Magnetic, Vortex, Transit Time & Doppler Ultrasonic VA Only.
Fire Hydrant Flow Tester
Paddlewheel, Turbine and Magnetic