Parallelism - Can you Reference 3 Datums?

In this question line video, Brandon explains datum references for the parallelism callout. Parallelism controls the orientation of a feature, so one datum reference is used when the constraint is applied to a surface, and two datum references are used when it is applied to a feature of size. Interested in learning more about GD&T? Check out more of our free GD&T resources here: https://download.gdandtbasics.com/youtube-free-gdt-resources