A portable tire pressure gauge measures a value of tire pressure. The gauge
can display the measured value digitally and selectively in one of
different units of pressure. If the gauge is made for use in a country,
the gauge can output the measured value aurally and selectively in one of
two languages that a majority of people in the country understand. These
languages may be the language of the country and a first foreign language
in the country. The gauge includes a display, a switch, a solar battery
and an audio output unit. The display digitally displays the measured
value. The switch switches the different units of pressure. The solar
battery is the power supply for measurement and display. The audio output
unit can output the measured value aurally and selectively in one of the
two languages.
