Digital Dual-Port Manometer Air Pressure Meter Differential Gas Tester Gauge

⚠️Customizable Overpressure Alarms. ① T9-S8820 Pressure Gauge (Black+Orange). ✅12 Pressure Units + DIF Mode. ✔Gas Appliances : Boiler/furnace pressure checks. Resolution : 0.001 (Unit-dependent). Power : 3×AAA Batteries (. ).

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