What tool is used to enhance visibility when inspecting the interior of a container?

The use of a flashlight is essential for enhancing visibility when inspecting the interior of a container. Containers can often be dark, dirty, and cluttered, making it difficult to thoroughly examine all areas for any signs of damage, contamination, or foreign objects. A flashlight illuminates these areas, allowing inspectors to see any potential issues more clearly. This is crucial for ensuring that the container meets safety and compliance standards before it is put back into service.

In contrast, other tools like chalk, tap hammers, and wire brushes serve different purposes during inspections. Chalk can be used for marking areas on the exterior of a container or to indicate repairs needed, but it does not assist in visibility. A tap hammer is typically used for checking the structural integrity of the container surfaces but does not aid in lighting dark areas. A wire brush is effective for cleaning rust or residue from container surfaces, but again, it does not help illuminate the interior. Hence, the flashlight is the appropriate tool to ensure effective and thorough inspections in low-light conditions.