I prefer to use a radiant thermometer rather than a tire gauge. I once got my tandem axel flat bed trailer out, and before I loaded it I used my tire gauge to check the tires, they were all OK.
Maybe 3 hours had pasted before we were all loaded up and ready to go.
We drove about 8 miles and then stopped at a grocery store, and while my wife was picking up a couple of things, I check the trailer tires again. We had a nearly flat tire. Apparently the valve stem valve stuck when I checked the tire with the tire gauge and leaked.