What should be used for a visual inspection of a weld?

Using a magnifying glass of at least ten power is appropriate for a visual inspection of a weld because it allows the inspector to closely examine the weld for surface defects, inconsistencies, and other critical indicators of quality. A ten power magnification provides sufficient detail to identify common welding flaws, such as cracks, porosity, and incomplete fusion, without being too cumbersome.

Visual inspections are often the first step in ensuring the integrity of a welded joint, and using a magnifying glass enables inspectors to effectively assess the surface condition directly and efficiently. The magnifying glass is also portable and easy to use, making it a practical choice for on-site inspection tasks.

In contrast, while a handheld microscope might provide greater magnification, it may not be as suitable for overall weld inspections due to a limited field of view and potential difficulty in handling during on-site evaluations. A digital camera could document the condition but would not directly aid in real-time inspection. An optical comparator, typically used for measuring and analyzing dimensions rather than a direct surface inspection, may not be easily accessible or practical in all situations involving weld evaluations.