For the old version of the tire pressure gauge Hiprema 1 and Hiprema 2 Power OFF the instrument, press ON button until the display show BAR or PSI
Click here to download the Hiprema 1 and Hiprema 2 user guide.
For the pressure gauge Hiprema 3 version, power ON the instrument and press MEM button until the display show BAR or PSI.
Click here to download the tire pressure gauge Hiprema 3 user guide.
It is not necessary to calibrate the instrument.