Review on 🚗 HAUSBELL 250 PSI Digital Tire Pressure Gauge - Accurate to 0.1 - Heavy Duty Steel & Brass for Car, SUV, RV, Truck, Motorcycle & More by Travis Rio

My gauge won't read "zero" on startup no matter what I do, the reading is far, (the Reading is +3.9psi, although it should be negative as I am at 6700ft above sea level) HOWEVER you would think this would cause problems with the actual readings, I have SA the accuracy of my unit from tire pressure readings checked. both coincided. Unfortunately, this is affecting my confidence, but for now I feel like the device is providing accurate readings.