Hello,
Right now inside of Fusion 360, we support showing of the XYZ delta measurements when you measure between two points. You can get the check box option you see in the image below by selecting two vertex points. If you hover over the value in the dialog for one of the Deltas it will show the value in the graphics window in case you are unsure which direction is which.

We are continuing to work on improving Fusion's capabilities, if having additional selection options for XYZ delta is important for you, we have an Ideastation that allows customers to provide recommendations on what is important to them. This way we can prioritize feature enhancements such as this.
Here is an example of one related to what you are working on from another customer. http://forums.autodesk.com/t5/fusion-360-ideastation-request-a/enhancement-measure-tool-circle-to-ve... The more votes a post gets the more we know the importance of this kind of functionality.
Hope this answers your queston.
Cheers,

[Joel Palioca]
[Software QA Engineer]
Joel(dot)Palioca(at)autodesk(dot)com
Autodesk, Inc.