GAUGE HEAD ONLY TIRE PRESS 50 PSI / 3.45 BAR RACE DIGITAL BACKLIT W/ MEM PRO-COMPHaving An Exact Measurement Of Your Tire Pressure Is Oftentimes The Difference Between Lighting Up The Win Lights And Blowing Your Tires Off At The Line. Autometers Professional Grade Digital Tire Pressure Gauge Provides The Most Accurate Measurement Available In A Durable Form Factor Designed For The Rigors Of Life At The Track. 50 PSI racing gauge with digital display and 0. 01 PSI resolution Accuracy: 0. 25% FS (0. 125 PSI) Precision solid state