How do I use a Pencil Tire Gauge?Updated a month ago

The BlackboxMyCar Pencil Tire Gauge is a compact and reliable tool that allows you to easily and accurately measure your tire pressure. To use this tool, please do the following steps: 

1. Unscrew the valve stem cap on your tire. Every tire has one, poking out of the side.
2. Insert the gauge, pressing the top of the Pencil Tire Gauge onto the valve stem. When done correctly, you'll hear a brief hissing sound.
3. Remove the gauge from the valve stem and observe the measurement displayed on the scale at the bottom of the gauge. It will indicate the pressure in PSI. 
4. Between each use, reset the gauge by pushing the scale back into the body.

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