What do we call the defined measurements for pieces within a design or drawing?

The defined measurements for pieces within a design or drawing are called dimensions. Dimensions provide the necessary numerical values that indicate the size, shape, and location of geometric features in a design. They are essential for conveying precise information to ensure that parts can be accurately manufactured or constructed according to the designer's intent.

Dimensions not only help in the construction of physical models but also play a vital role in ensuring the compatibility of various components by specifying how different parts will fit together. In technical drawings, dimensions can include linear measurements, angular measurements, and notes about tolerances, which further clarify how the parts should be created.

Other terms, such as "Detail View," refer to a more focused examination of a specific area of a drawing, "Countersink" describes a type of hole preparation, and "Degrees of Freedom" relates to the movement capabilities of an object in a given space, which do not pertain directly to the topic of measurements within a design. Therefore, dimensions are the correct term for the defined measurements used in design and drafting.