Which tool is specifically designed to check tire air pressure?

The tire gauge is specifically designed for measuring tire air pressure. This tool typically features a dial or digital display that indicates the pressure level within a tire, allowing vehicle owners and mechanics to ensure tires are inflated to the recommended levels. Maintaining proper tire pressure is crucial for vehicle safety, fuel efficiency, and longevity of the tires.

In contrast, a pressure regulator is used to control and maintain a consistent pressure in gas or liquid systems, which is not its main function. The pneumatic gauge is a broader term that may refer to devices measuring air pressure in various applications but is not exclusively designed for tire pressure. A manometer is a device used to measure the pressure of gases or liquids, which can be useful in a range of scientific and industrial applications, but also is not tailored specifically for tire air pressure measurement. Thus, the tire gauge is the tool that directly meets the need of checking tire air pressure accurately and effectively.