Review on Zefal Twin Bicycle Tire Gauge by Danny Bell

I had a previous version of this meter (Presta connector only) and was always amazed at the functionality of the meter. The ability to hold a reading after pulling it out of the valve means you don't have to try to take a pressure reading while on the valve. Two valve ports provide flexibility, but the additional Schrader port doesn't work for me, making it slightly larger than the previous Presta-only version I had. Not a big deal, but when you're trying to cram a lot of tools into a small saddlebag, size does matter.