I have a standing desk and needed a way to have access to some USB ports at the front, with my laptop also mounted below the desk. This allows you to mount a Lention CE-31s USB hub (I have the 2ft variant) underneath a desk with access to all 5 USB ports on it.

I'm a judge for a state-level competition, and after a close call at an invitational while I was measuring the blade, I decided to make an easy to use gauge that can check the blade lengths quickly and at a glance.