A sketch section is used to show?

A sketch section is utilized primarily to illustrate a necessary detail of a component or assembly in engineering drawings. This method allows engineers and designers to provide a clear and concise representation of complex geometries, internal structures, or components that may not be easily visible in standard two-dimensional views. By cutting through the object and displaying a cross-section, it highlights specific features such as internal cavities, reinforcement, or the relationship between various parts, which is crucial for understanding the functionality and assembly of the design.

In contrast, the other options are not the primary purpose of a sketch section. It may not always provide just a single view or perspective of an object, as its main goal is to deliver detailed information rather than an overall appearance. While scale can be important for conveying proportions in sketches, it is not specifically represented by a sketch section itself. Likewise, the material of construction may be indicated in a drawing but is not the focal point of a section sketch, which aims to detail the shape and design rather than material specifications.