Uharbour Glycerin Filled Vacuum Pressure Gauge, 25 Clear Dial,14Npt Back Connection, Stainless Steel Case, Brass Movement, Dual Scales -30Inhg-1Bar-0UHARBOUR liquid filled vacuum pressure gauge (-30 to 0 inhg) is designed for the media which is not corrosive and where vibration and pulsation is a concern Material: 304 stainless steel case, Brass ..