Yes, you are correct. When defining the geometry of a feature of a part, the following geometric attributes must be considered:
1. Size: This attribute refers to the dimensional characteristics of the feature, such as length, width, height, diameter, or any other relevant measurement.
2. Location: It refers to the position of the feature relative to a reference point or other features on the part. Location can be specified using coordinate systems, datums, or other geometric references.
3. Orientation: This attribute describes the angular or rotational position of the feature. It can be specified using angles, planes, or other geometric references to define how the feature is positioned relative to the part or other features.
4. Form: Form refers to the overall shape or contour of the feature. It includes attributes such as straightness, flatness, roundness, cylindricity, and other geometric characteristics that define the surface or profile of the feature.
By considering and specifying these geometric attributes, engineers and designers can accurately communicate the intended geometry of a part and ensure proper fit, function, and interchangeability in manufacturing and assembly processes.