Magnehelic Gauge Calibrator consists of a portable hand pump & a Digital Master Gauge with Selectable engineering units. The Portable Hand Pump is a light weight pneumatic pump used to generate air pressure for calibration of Analog Magnehelic Gauges, Differential Pressure Transmitters, Differential Pressure Indicators & Low Pressure Instruments. Pressure is generated using the hand pump with provision of Fine & Coarse Pressure Adjustment. The pump is provided with 2 Pressure Ports, one for the Master Digital Gauge & one for the Magnehelic Gauge/Transmitter (Unit Under Calibration). The Pneumatic Hand Pump is capable of generating both positive & negative pressure for calibration of various low pressure gauges & transmitters. The range of the pump is from - 3000 mm.W.C. upto 10,000 mm.W.C. The Master Digital Pressure Gauge is imported & has front key selectable engineering units between mm.W.C., Pascals, hPa, mBar, mm.Hg., In. Hg., In.W.C. & PSI. The Digital Differential Pressure Gauge can measure from 0 to +/- 1000mm.W.C.