I made a custom bracket to so I could use a dial indicator to more accurately level my 3D printer’s bed. Works great and is relatively simple to use. Check out the video to see how it’s mounted and how to use it.
Download the model: http://www.thingiverse.com/thing:1673594
Dial indicator (Amazon): http://amzn.to/2adZ2Lp
Dial indicator (Harbor Freight): http://www.harborfreight.com/1-inch-travel-machinists-dial-indicator-623.html