Looks like a good quality pressure gauge and measures pressure correctly. ends? (Extra articulations are just additional potential sources of error). And some people have complained that it doesn't hold pressure readings after you take it off the tire. Well, if you want this feature, you can spend more money and get it. I don't need this feature, so I'd rather spend less and not get it. :) I recommend taking a cheap "pencil" sensor in every car, but keep a good one in your garage.