A Tire Gauge is a small, portable device used to measure the air pressure inside vehicle tires. It helps ensure proper inflation, which improves safety, fuel efficiency, and tire lifespan. The tire gauge in the image appears to be a pencil-style analog gauge, which is easy to use and typically features a sliding pressure scale. It comes with additional valve caps for convenience. This type of gauge is ideal for cars, motorcycles, bicycles, and other vehicles requiring precise tire pressure monitoring.