How to adjust the air pressure to liberate the tyrant

Turn the dryer screw with a flat screwdriver or blade. To adjust the air pressure, you can turn the screw of the dryer with a screwdriver or a blade. When rotating clockwise, the pressure increases, and when rotating counterclockwise, the pressure decreases. Atmospheric pressure is the atmospheric pressure acting on a unit area, that is, it is numerically equal to the gravity of a vertical air column extending upward to the upper limit of the atmosphere.