Review on 🔵 Yellow Jacket 49138 3-1/8" Blue Compound, 30", 0-350 psi, R-22/404A/410A Gauge Degrees F (Pack of 2) by Tony Stennis

I received this gauge to replace another Yellow Jacket gauge, the 40332 Short Sleeve Composite Gauge. The 40332 included a clutch that cost about $18, but was -3 to -6 psi off zero and could not be corrected by adjusting the calibration screw. This sensor, 49138, outperforms it in every respect but one. It has a longer range, larger face (and therefore greater resolution) and most importantly, it's out of the box and adjustable above and below zero. It is accurate and is a professional HVAC device. The only thing missing from 40332 was a short yellow jacket muff. So this sensor cost me $15 more. But this is without a doubt the best analog meter I have. I highly recommend it.