geometric and dimensional tolerance chart
Geometric Tolerance Chart

In 1984, Dr. Hetland was contracted to train a core group of upper-level management representing design, metrology, manufacturing and tooling. The Company’s training objective was to provide geometric dimensioning & tolerancing (GD&T) users with higher competencies and with emphasis placed on harmonization of GD&T across all departments to achieve highest production efficiency. This initiative was brought forth by acknowledging the criticality of doing projects right the first time.

“On-site” training was facilitated in a dedicated room of average size, with a unique whiteboard that encompassed the perimeter of the room. The training was highly interactive due to the involvement of many participants with different reference experiences of GD&T based on their past training, personal utilization, various competency levels and spanning multiple departments.

UPDATE: Unfortunately, Dr. Hetland seems to have taken his free tolerance chart down, and I wasn’t bright enough to keep a large copy. So, apologies to those of you looking for this, but we don’t sell them and I ain’t linking to a 404 page.