This is considered a theoretically exact surface, plane, axis, center plane, or point from which dimensions for related features are established.
A) baseline
B) basic dimension
C) datum
D) none of the above

Question

Quizplus · Accepted Answer

A datum is a theoretically exact surface, plane, axis, center plane, or point from which dimensions for related features are established in engineering and manufacturing. The other options, baseline and basic dimension, refer to specific types of dimensions and do not necessarily establish a theoretical reference point.

This Is Considered a Theoretically Exact Surface, Plane, Axis, Center