Portable Type Vacuum cum Pressure Calibrator is designed with 4 digit backlit LCD for accurate pressure measurement from 0.00 to 7.00 BAR and is suitable for pressure measurement and generation with provision to measure vacuum, differential pressure and gauge pressure. The Calibrator comes with 2 ports for measuring differential pressure, gauge pressure and vacuum. The Calibrator has ABS plastic made instrument housing and has built in pressure sensor for air or gas application. The Calibrator is a screw type hand pump with coarse and good pressure setting for accurate setting and control of pressure generated. The Calibrator has the feature that for calibrating pressure or vacuum instruments, one pressure port is connected to the instrument under calibration and the other pressure port is connected to the master manometer provided along with. The Portable Type Vacuum cum Pressure Calibrator has air or gas sensor working medium.