Features heavy-duty construction to withstand shifting around in your glove compartment. Designed to last, it has an angled head and rubber coated handle for easy gripping. The LCD display is large and easy to read. If you forget to turn the gauge off, don"t worry, it is equipped with automatic shut off. The gauge will read within 0.05 PSI. The lithium battery will never need to be recharged or replaced. This gauge measures air pressure from 5-150 PSI in 0.5-pound increments.