Yellow Jacket 49138 3-1/8" Dry Manifold Gauge, Blue, 30" -0-350 psi, R-22/404A/410A Feature_Screwdriver and very reliable

and very reliable

SIMPLE SETUP - Universal crossbar and color-coded mandrels make identifying and changing sizes quick and easy

Overall Length (Inch): 10

Weight (kg):  3

It was designed for use with Klein Tools clamp meters but will also function with many other manufacturers' clamp meters

Yellow Jacket 49138 3-1/8" Dry Manifold Gauge, Blue, 30" -0-350 psi, R-22/404A/410A Feature_Screwdriver and very reliableYellow Jacket 49138 3 1 8" Dry Manifold Gauge, Blue, 30" 0 350 psi, R 22 404A 410A With 1% accuracy (Class 1) calibration. Large 3 1 8" gauges are housed in a red or blue steel case with front recalibrator screw. High visibility colored temperature scales are easy to read through the full view polycarbonate crystal. Flutterless technology with brass surge protector to minimize needle pulsation Brass gauge movement Copper alloy Bourdon tube 1 8 NPT