Convenient measurement of tyre pressures and depth of profile using one tool. The self-calibrating tyre pressure and tread depth gauges makes possible the fast and convenient display of the tyre pressure and the depth of profile. The tyre pressure units: Bar (bar), pound force per square inches (psi), kilogram force per square centimetre (kgf/cm²) and Kilopascal (kPa) can be selected. Depth of profile: millimetre (mm) and inches (in). The accuracy within approx. 0.01 bar.