Yellow Jacket 49001 2-1/2in Class B Replacement Pressure Gauge in Red

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The Yellow Jacket 49001 is 2 1/2 inch diameter pressure gauge, red pressure, 0-500 psi, R-12/22/502. The 49001 is a steel case for durability and high-visibility dials with colored temperature scales for easy reading. Features Flutterless™ technology with surge protector minimizes the needle pulsation for improved accuracy 1/8″ NPT Male connection 3-2-3% accuracy Calibration traceable to NIST standards Note: Small screw in back is 6/32″ x 5/32″ Phillips pan head screw. Note: Gauges not meant to be used with nitrogen.