The lightweight and easy to use Twin Graph Tyre Pressure Gauge from Zefal is compatible with both Presta & Schrader valves. It features a clear and easy to read gauge with both psi and bar measurements.
Simple and easy to use, just press the gauge onto your valve and the gauge will set to what pressure is in your tire. You can then remove the gauge from the valve and clearly read the display. Once satisfied a quick press of the reset button will return the gauge to the zero position.