What is the primary purpose of a sectional view?

The primary purpose of a sectional view is to show internal details of a part. This type of drawing helps convey information about the internal structure, features, and components of an object that would not be visible in a standard view. By removing a portion of the object or slicing through it, a sectional view reveals the arrangement, sizing, and relationships of internal features, such as cavities, holes, or other critical details that are essential for understanding how the part functions or is constructed. This information is particularly valuable in engineering, manufacturing, and design fields, where precise dimensions and internal configurations are crucial for proper assembly and function.