What equipment must all inspection stations possess according to their class?

All inspection stations in Missouri are required to possess specific equipment based on their class to ensure that they can perform thorough and accurate vehicle inspections. The correct answer highlights the necessity of having a measuring device. This device is critical in the inspection process to assess various vehicle parameters such as brake pad thickness, tire tread depth, and overall vehicle dimensions that are pertinent to safety standards.

Having a measuring device allows inspectors to confirm that all components of the vehicle meet regulatory requirements and ensure that vehicles on the road are safe and adhere to environmental standards. This ensures that the inspection process is standardized across all facilities, which helps to maintain public safety and compliance with state regulations.

In comparison, while a light meter, tire mounting machine, and hydraulic lift may be useful in various contexts within vehicle maintenance, they are not universally required for all inspection stations. The emphasis on measuring devices reflects their role in quantifying specific aspects crucial for the inspection process, demonstrating the importance of precise evaluations in maintaining vehicle safety.