Dial gauge mount for Gregs extruder. Prusa I3

This is my first 3d model. It is a dial gauge mount for my Prusa I3 with a Gregs extruder. It fits to my cheap dial gauge from Ebay with 8mm shaft.

Added version 2 (red) (OCT/2013)
V2:
-Installation easier, with shorter screws (M4x15). It can be mounted/removed without completely unscrew the screws.
-Added another screw to securely attach the dial gauge.