What type of dimension indicates the overall size of an object?

The type of dimension that indicates the overall size of an object is identified as a size dimension. Size dimensions are crucial in engineering and design, as they provide the necessary measurements related to the physical extent of an item. This includes length, width, height, and other measurements that define the object's scale and volume. Accurate size dimensions ensure that the object can fit within the intended design parameters and function as planned.

In contrast, other types of dimensions serve different purposes, such as specifying a location or orientation on the object, providing additional reference points for clarity in design, or general dimensions that may not provide precise measurements but do offer additional context. However, when it comes to the fundamental characteristic of measuring the object's overall size, size dimensions are specifically tailored for that role.