Bed Levelling/Height adjusting screw/clips

I use this on the Printrbot simple. It could be used on other machines, the metalwork may need adapting..
I use it with Jon Lawrence, Printrbot Simple X upgrade, http://www.thingiverse.com/thing:257841
I needed a convienient way to adjust the height/level of the bed. The arrangement needed to fit my current set up, hold the heat bed, and allow for easy removal and replacement of the bed itself.
The Z-probe never worked consistently for me, so I came up with this solution.
Went for 4