I have no idea if this is the best ball gauge or not but this item works well. It appears to be accurate (we haven't calibrated it, but its reading is comparable to readings we get from our other gauges) and the air release valve makes it very easy to get the correct pressure reading if you've overinflated. A big plus of this sensor that makes it better than many others we've used is how easy it is to see the readings! It is no longer necessary to count ticks on the scale to determine the actual pressure. No more tilting your head at weird angles so you can see the measurement marks. The only potential downside to this sensor is that it's made out of plastic. Since my son keeps it in his travel bag, we kept the sensor in the box it came in. We simply left the packaging intact and peeled the card off the plastic cover to remove and reinstall the sensor.
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