Diameter Calibration for Holes and Bosses on Replicator 2

This project helps Replicator 2 owners print parts with more accurate diameters for holes and bosses. The problem comes from [Arc Compensation](http://reprap.org/wiki/ArcCompensation), an issue caused by slicing software that makes holes print out smaller than they were designed and bosses print out larger than they were designed. This is only a real problem when you are making through holes, holes that will be tapped, press fit components, etc.

To solve this problem, I printed a bunch of d