Which of the following tools is commonly used to assist in making visual inspections of welds?

Using a magnifying glass is highly effective for making visual inspections of welds. This tool allows the inspector to closely examine the fine details and surface imperfections of the weld, such as cracks, lack of fusion, or other defects that may not be immediately visible to the naked eye. The additional magnification helps ensure that the integrity of the weld is assessed thoroughly, ensuring safety and quality standards are met.

In contrast, a welding torch is primarily used for the actual welding process rather than inspection. A level is useful for determining if a surface is even, but it does not assist in examining the quality or details of a weld. A measuring tape, while useful for measuring dimensions and ensuring appropriate sizes, does not provide the visual examination necessary for assessing weld quality. Thus, the magnifying glass is the most suitable tool for this specific purpose.