System and method for measuring, calculating, recording and reporting vehicle tire pressure using a pneumatic piston-type gauge

A handheld pneumatic tire pressure gauge includes a substantially hollow tubular body section having a gauge head at one end and an open end opposite the gauge head. The gauge head is configured to operatively connect to a pneumatic tire. An elongated measurement scale is slidable positioned within the body section and is configured to be forced out of the body section through the open end. The measurement scale extends outwardly though the open end a distance proportional with a measured air pressure. The measurement scale includes a series of rectangular markers spaced apart at intervals and arranged in groups of common hue along its length.