Solidoodle 3 Dial Indicator Mount

I could not find a dial indicator mount that was easily printable and would accurately mount on my extruder (not sure if they changed the design recently) so I designed my own.

It uses magnets to keep the mount stable on the extruder, but locates itself by hugging onto 3 bolts on the outside of the extruder.

For reference, my SD3 bed had 0.31mm variance between the high and low point on the bed.

Magnets used. (6.2mm OD)
http://www.amazon.com/dp/B001KV9RAW

Dial indicator used
http://www.amazon.com/dp/B006YD7G36