It currently is not possible to use Measure Names/Values in a calculated field (although it's a good one for the Ideas section). There are ways around getting the desired view, however. Jonathan Drummey's response in this thread should help you:
Hope it helps!
Thanks Tracy and Shawn-
I downloaded JD's workaround, and will see if it's workable.
I just up-voted the idea.
Is there any documentation on Tableau's object model/specification?