3030 corner and heigth tools

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/3sGMWkNhFFY

12-1-2018
Changed the large corner tool as the M4 nut was in the way....

Two simple tools for setting up 3030 profiles

The small corner tool is to make a perfect square when using inside corner brackets.
The large tool is to adjust vertical profiles at all corners at the same heigth.
The center of the large tool can be equipped with a M4 bolt and nut so you can adjust the heigth.

I thin