What instrument is used to measure tire pressure during inspection?

The instrument specifically designed to measure tire pressure during inspection is the tire pressure gauge. This device provides an accurate reading of the air pressure within a tire, which is crucial for ensuring that the tires are properly inflated according to the vehicle manufacturer’s specifications. Proper tire pressure is essential for optimal vehicle handling, fuel efficiency, and tire longevity.

While other instruments mentioned serve specific purposes related to tire maintenance, they do not measure tire pressure. A tire tread depth indicator is used to check the remaining tread on a tire to assess its wear and safety, but it does not provide measurements related to air pressure. A pressure sensor, often found in modern vehicles, can indicate tire pressure on the dashboard and alert the driver when levels are low, but it is not used during manual inspections. An inflation pump is utilized to adjust tire pressure by adding air but does not measure it. Therefore, the tire pressure gauge is the only instrument among the choices that directly measures tire pressure, making it the correct answer.