Mark: nice, neat, simple drawing. How about adding a note or a table to adjust for 2-gang and up? I'm impressed that you covered the screwless wallplates, also!
I'm sure a printing or graphics pro could get this set up for you sized 1"=1" if you wanted to give somebody a template, but why bother? Carpenters and cabinet-makers should be able to measure. They certainly don't get the building prints at 1-to-1.
