Lulzbot TAZ 5 X-Axis Dial Mount

I wanted to mount a dial indicator to the X-axis bars to make sure my bed was as level as I could get it.

The dial indicator I got isn't anything fancy: http://www.harborfreight.com/1-inch-travel-machinists-dial-indicator-623.html

Key design points:
* can't put something between bars because of belts
* use print bed surface for flat edge of mount
* make dial mount reusable

I got a 1/4 in bolt to mount the dial. Note that the dial mount allows for slop in dial indicator's mounting hole.