Yellow Jacket 49138 3-1/8 Blue Compound Gauge

The large 3-1/8 inch gauges come in a red or blue steel case with a front recalibrates screw for easy adjustment. The high visibility colored temperature scales are housed behind a full view polycarbonate crystal, making it easy to read. The gauge utilizes flutter less technology with a brass surge protector to minimize needle pulsation, and features a brass gauge movement for accuracy. The copper alloy bourdon tube is color-coded for different refrigerant types, with blue indicating compound refrigerants.

This gauge is calibrated to 1% accuracy and has a 1/8" NPT male connection for easy installation. The item package dimensions are 2.0" L x 2.0" W x 2.0" H, making it compact and easy to store when not in use.

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