Measure boost pressure with this bright digital boost pressure gauge. It has the following features: Microprocessor controlled with 0 to 30 PSI accuracy; Works with any vehicle; Accuracy; Easy viewing in sunlight; Automatic night dimming; Comes complete with instructions, sending unit, and in-dash mounting hardware; 2-1/16" diameter and only 1-1/2" deep; Reads in 1 PSI increments from 0 to 30 PSI; Our Digits are 33% Larger than any other Digital Boost Gauge on the market, guaranteed! Better precision and better visibility than you can buy with any other manufacturer!