Features : - used for gas or liquid compatible to stainless steel. - Large-screen LCD display, back light, high resolution, Easy to read. - Automatically record the maximum pressure value during the measuring process. - Pressure percentage dynamic display (Progress strip display ). - 5 select- able engineering units: psi, bar, kpa, mpa, kg/cm2 by pressing button. - Battery life over 2 years, 2000 hours continuous operating in electricity saving mode. - parameter revision function can correct gauge's zero and error on the spot. - sampling rate: 4 times/sec.