I recently got tired of messing around with my old mechanical analog tire gauge and decided to go digital. After searching on Amazon, I found two digital gauges that looked good: the Accutire MS-4000B and the Campbell-Hauschild AU1102. They both sounded good, although I was a little troubled by some of the reviews of the Accutire. I decided, since we have two cars, to get one of each, so I could keep one in each car. I have now experienced a couple of weeks of use, during which I have had the opportunity to employ a tire gauge more than usual due to "operator learning curve" problems associated with setting up the on-board tire pressure sensor in a new Toyota. (How do those things work, anyway?) The bottom line is: get the Campbell-Hauschild.
The Accutire looks cool and comes in a nice case. It has a convenient pocket clip. But doesn't work all that great measuring the air pressure in your tires. I experienced the sealing problem reported by others. It's not that big a thing, but you do loose a little air every time you take a reading. I will try the rubber tape suggestion made by another reviewer, but the C-H seals perfectly right out of the box. The Accutire reads a pound lower than the C-H and my old analog gauge. Maybe the other two are the ones that are "off," but . . . On several occasions, the Accutire did not give a reading - just displayed "0.0" The C-H always sealed completely and gave a believable reading. The Accutire is easy to use, all you have to do is push it against the valve stem and it turns on and gives a reading. The C-H has to be turned on with a button before pressing against the valve stem. The C-H has a tread gauge that also serves to depress the valve; the Accutire doesn't have any kind of nipple or anything to let air out of the tire if it is over-inflated. With the experience gained using these, at this point I would buy the C-H rather than the Accutire.