How to evenly space a note between two lines?

Putting together a new drawing template for our site. The zone designators/border is sort of a PITA....I have all the lines set perfectly, however how do I perfectly space a note (Consisting of a single letter or number) between the lines? I feel silly for asking, but there has got to be a better way than the way I am doing it currently.

SolidworksDrawings And Detailing