Many past Tips have illustrated dimensioning from and to center lines. There continues to be questions about when it is okay to dimension with center lines and when it is not appropriate. Dimensions may be to and from center lines on a drawing if the dimensions are basic and the center line is representing the:
- axis, center point or centerplane of a feature of size
- center of a pattern such as a bolt pattern
- center of a radius
- center of a slot length or width.