Flow Meter,Analysis Meter,Pressure Gauge, Temperature Instrument, Liquid&Level Instrumentation Flow Meter :This Metal-tube Rotameter Flow Meter. ... , measuring boxes, granaries, silo, etc. Magnetic Liquid level meter : Magnetic liquid level gauge are made up of measuring body, Dual-colored display ... ball which in the body of level gauge was up or down with the level of liquid changing and make Dual- ...