Review on 🏌️ WYNNsky Golf Cart, ATV, and Air Spring Low Pressure Pencil Tire Gauge - 1-20 PSI by Chris Endricko

This pressure gauge does not have a buffer on the slide, so it will give different readings depending on how quickly you increase the pressure. It will only give an accurate reading if you SLOWLY insert it into the valve stem and build pressure without ejecting the spool. If you don't and just stick it in there, the slider will be about 1/2-1 psi higher than the actual pressure.