Tire Pressure Gauges 3.5" Diameter
The 3.5" diameter face on these gauges allows finer resolution than smaller 2" and 2.5" gauges.
For optimum precision and long life, the needle moves back to zero as soon as the gauge is removed from the tire valve. These gauges can be converted to hold the reading if desired by adding the Compact Air Gauge Check Valve (Part No. 3228-500).