ACE Instruments offers Portable Vacuum cum Pressure Calibrator. ACE Instruments offers products for various industrial process control instrumentation like pressure, temperature, relative humidity, etc. The Portable Vacuum cum Pressure Calibrator is portable and easy to use. It is provided with 4 ½ Digit Backlit Dot Matrix Display. It is used to measure accurate pressure from 0.00 to 7.00 Bar or 0.0 to 100.0 PSI/ 0.000 to 2.000 PSI or 0.0 to 137.9 mBar. It can also be used in pressure measurement and generation facilitating vacuum measuring, differential pressure and gauge pressure measuring. It features Accuracy: Better than +/- 0.3 percent F.S., Power: 9 V.D.C. Battery and ABS Plastic Instrument Housing.