This Tire Measure Metal Tire Gauge Meter Car Dial Pressure is easy to use. you can concentrate on placing end piece over the valve stem then see your reading.                                    Features            The tire pressure gauge contained in this kit has a range of 10 - 100 psi and accuracy of 2 - 3 psiTo use， ensure that the gauge is set to zero and push the nozzle onto the tire valve so that a good seal is made between the valve and nozzle-failing to do so can result in an inaccurate readingOnce the nozzle is correctly applied， wait for the pressure reading and then remove the gauge from the valve stem and read the measurement                                                            Specifications            Dimensions    16 x 10 x 3cm / 6.29 x 3.93 x 1.18"(L x W x H)    <br>Weight    3.42oz / 97g    <br>Color    Black    <br>                                                            Package Includes            1 x Tire Gauge