In this Question Line video, Jason answers the following question regarding related and unrelated envelopes: 

What are Unrelated Actual Mating Envelope and Related Actual Mating Envelope?

In this video, Jason defines the terms “related actual mating envelope” and “unrelated actual mating envelope” and walks through a drawing example to explain when and how they are used to inspect a feature. 


 


We want to hear from you! Submit your GD&T question at the link below:  

https://www.gdandtbasics.com/share-your-gdt-questions/ 

If your question is selected, we will notify you when our video answer is posted to our YouTube channel.  

* If you are a current student, reach out to us directly and we will get you into contact with your instructor. Active students’ questions receive a direct response within 24-48 hours.    


Stop hunting through pages. Get our GD&T Symbols Chart—your quick reference guide with every symbol on one page.

Save it to your desktop or print it out for quick reference. We’ll send the digital chart straight to your inbox. No spam, just helpful GD&T resources.

Get Your Free Chart