Which dimensions are used to show individual items, such as the center of a hole?

The correct choice pertains to the use of feature dimensions in detailing a welding print or engineering drawing. Feature dimensions precisely specify important attributes of individual items and features on a component. For example, in the case of holes, feature dimensions would indicate the center location of the hole, along with its diameter. This level of detail is essential for proper fabrication and assembly, as it ensures that each part fits and functions as intended.

Feature dimensions help communicate specific geometries and locations crucial to achieving the required mechanical properties and standards in welded assemblies. Overall dimensions, while useful for providing the general size of a complete part, do not give the specific placement of features within that part. General dimensions can refer to a broader range of sizing without pinpointing exact locations for features. Segmented dimensions typically break down larger measurements into smaller, more manageable portions but are not ideally suited for indicating the centers of individual features like holes.