[ https://www.amazon.com/dp/B00TH3AKXS?tag=dmflip-20&linkCode=ogi&th=1&psc=1 ]
SSI TECHNOLOGIES MG-9V Series, MG-30-A-9V-R – 9V Battery Operated Digital Pressure Gauge, 30PSIG, 2.5” Dial with LCD Display and Black ABS Case, 0.50% Accuracy, 1/4“ NPT Male Stainless Steel Connection
👇Product LINK 👇