The basic dimensions shown on a print are called what type of dimensions?

The basic dimensions displayed on a print are referred to as nominal dimensions. These dimensions represent the theoretical or ideal size and shape of a component before any variations or tolerances apply. They serve as a standard for manufacturing or construction, guiding the production process to create parts that fit together as intended.

Nominal dimensions provide a reference point for designers and manufacturers to ensure consistency and interchangeability among parts. Unlike actual dimensions, which pertain to the measurement of a specific instance, nominal dimensions are generally standardized values from which variations (tolerances) are allowed to ensure that parts can still function together despite minor differences in actual size.

Understanding nominal dimensions is vital in the context of engineering and manufacturing, as it lays the foundation for precision and quality in producing components.