Review on Slime 20048 Automotive Accessories by Sean Sheppard

I bought this because I wanted something more accurate than the traditional retractable rod gauge. The dial shows a mark for every 2 pounds. I'm getting stable readings, but these readings are off by exactly 4 pounds. The 40psi reading on the gauge actually corresponds to 44psi in my tire. Not the accuracy I was hoping for. Strangely, the back of the box says not to pump, but with this gauge, that's impossible. He returns to the store. It turns out that the sensor I have with the little stick that pops up is more accurate than this one. If you're looking for a sensor that will provide accurate readings, keep buying. It feels fairly solid on the top, with the button holding a reading on the gauge until it's depressed.