Symmetry and Concetricity without MMC or LMC
Symmetry and Concetricity without MMC or LMC
(OP)
Hi all,
Pardon me for asking this stupid question. Why Symmetry and Concentricity are used with only RFS?
Pardon me for asking this stupid question. Why Symmetry and Concentricity are used with only RFS?





RE: Symmetry and Concetricity without MMC or LMC
On ISO (GPS) I don't know, but I am sure other folks around will provide you an answer from ISO(GPS) perspective.
RE: Symmetry and Concetricity without MMC or LMC
The main reason is that the very definition of concentricity and symmetry involves the "median points" of opposing elements. And the only way to find the median points is to take the actual elements from the actual surface, regardless of size. (If we were to take the median points of an envelope, such as that created by MMC, it would negate the definition of the symbol.)
John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems