-30″ Hg/15 psi Vacuum/Pressure Gauge-30″ Hg/60 psi Vacuum/Pressure Gauge Back to: Replacement Combination Vacuum/Pressure Gauges -30″ Hg/30 psi Vacuum/Pressure Gauge Product Code: 24104 Gauge, Vacuum/Pressure 30" to 30 psig Compound 1/8" NPT CBM, 2" diam, SS Price £194.00 Description 2-inch vacuum/pressure gauges, 316 stainless steel with 1/8″ NPT fitting and center back mount. Recommended for use with canisters.