Topeak SmartGauge D2 Presta/Schrader Precision Digital Gauge

This could be my favorite tire gauge ever. So easy to use and easy to read. In comparing it to multiple mechanical gauges I have around the house, it seems very precise, but keep in mind I am comparing a digital reading to a guestimate of readings on some tiny lines. Love that I can set all four tires on my vehicles to the exact same digital pressure and the tap/tuning feature is excellent for getting exactly the PSI you desire. I also love that it can do double duty, checking either the Schrader valves on my vehicles or the Presta valves on my mountain bike with just the flip of a switch. This thing rocks!