GD&T Position

[[Ji...]]

Hello everyone,

We are frequently encountering measurement‑related questions. Many junior customers keep referring to various international standards such as ISO standards.

 

Our Calypso software has already been configured for ISO‑compliant evaluation.

I would like to clarify: when evaluating the position tolerance of a hole, is Gaussian (least‑squares) fitting the default method according to ISO requirements?

 

Which ISO standard and specific clause defines this rule?