Tiered Wedge

I have 4 TV's on my desk that serve as monitors. They are the same size, but the desk makes them not align just right. So I created this tiered wedge with each level being 1mm of difference. This allows me to place the wedges on which ever sides I need finely tuning their exact height arrangement. This lets me perfectly align all of my screens.

Of course this could be used for anything you want to have minor adjustments on, not just monitors.