Radius Gauge

Radius gauge inspired by TnaTmr.

I recessed the text and added a hole so I can hang it on my keychain.

-*Updated 2016/10/10*-
Based on feedback from the guys in the office have adjusted the following
- Added chamfer at base to give scraper purchase when removing from the build plate
- flipped the text on on row the other way so it reads the right side up when used
- Made the text slightly bigger for easier reading
- Got a tip from one of the guys to use white nail polish in the recessed text to make it stand out for easier reading.