Robo3d dial gauge holder

I made this thing for my printer to measure distance variations from the heated bed to a extruder/motor block. I was need this to make sure that my printer bed is reasonably flat.

This thing consists out of 2 parts: one to lock on the motor and another to screw it to the first and then to hold gauge in my case. So it's easy to replace 2nd part to hold any other tool that you could potentially need for your Robo3D.

Here is the video showing how thing is used: http://youtu.be/f5K_Uad4KnA