... in refrigeration application for testing, semicing,and recharging. Our dial fea-tures R-12, R-22 Type :KP016 ( ... refrigeration application for testing, semicing,and recharging. Our dial fea-tures R-12, R-22 and R-502 ... OR R-304 scaleDial size:2.7", 3.15",Pressure range:30"Hg VAC to 150 psi ... , kg/cm2) availableAccuracy:ASME B40.1 Grade B ( 3-2-3% Full Span )Liquid Filled medium:Glycerin filled: -20 ...