Works with Geetech LCD full graphic display. Mounts on 20mm V Slot extrusion with 2 M5 bolts. Requires M3 bolts, nuts, and washers to assemble. I am going to make or buy a M3 wing nut for the adjustment slide arm. Only has a normal nut in the picture.
Update: printed one of these off:
Works very nicely with a regular M3 nut.
If you need modifications let me know.
Update 2015/08/28 added modified version made by Elmo Clarity (OpenBuilds Tag)
Since there are no mounting hole on the LCD case you will need to drill three 3mm holes. Just center the bracket vertically and horizontally before drilling. If the is a bit of a gap on the sides just use a M3 washer as a spacer.