iPad Pro 12.9" Mic Stand Holder

After switching to the iPad Pro 12.9" from the iPad Air 2, I couldn't find a suitable and affordable tablet holder for the larger size. I already had one for the smaller ipads and decided to adapt its design to a larger one.
It's a geared design which allows to just place the tablet in the holder and by hand-tightening the bolts, it clamps the tablet to a tight fit.
On one of the long sides I added a holder/clamp for the Apple Pencil.