Devilbiss DGi 501 DIGITAL Air Pressure Gauge Clear and Accurate Display Extremely accurate, Easy to read, Very tough, Solvent resistant, Zone 0 - intrinsically safe. Clear and easy to read, just squeeze the trigger and set. Provides accurate control of air pressures on Spray Guns, Paint Pumps, Pressure Tanks and many other finishing products and applications. The DGi digital air pressure gauge by DeVilbiss is a 'Zone 0' approved digital air pressure gauge designed specifically for the spray finishing industry. Engineered by DeVilbiss, the DGi can even be put into the gun wash machine! Accurate and repeatable pressure settings to within .05 bar are assured with the smooth valve action. The DGi is designed to have a service life of two years based on 24 hours a day continuous use. The adjusting valve guarantees smooth and accurate settings and incorporates a clear digital readout. Price Per Each.