Acme Automotive's new Digital Tire Pressure Gauge is durable and easy to use. Its back lit gauge clearly displays the measurement with a high degree of accuracy (+ or - 0.5 PSI) in a variety of units including: PSI, bar, kgf/cm2 and kPa. Available with both dual and straight foot service, this gauge measures the tire pressure of a car or truck from 2 to 150 PSI. Chuck head swivels to enable easy checking for tire pressure from any angle and batteries for the LCD display screen are replaceable.