Idiot proof tool to help you get the 60 degree (or 120 degree) angle, depending on which side you're looking from.

I just wanted a simple tool to align my outer screens. The tool had to be big enough to ensure accuracy of the angle, and also for easy handling when holding against the aluminium profile and tightening down to lock in that perfect angle.

This tool is useful if your profile is not long enough to extend past to allow you to measure the 60 degree angle, which is why this tool is measuring the 120 degree angle (180 degrees minus 60 degrees) .

I tried using a protractor, I tried eyeballing it. I should have just printed this tool earlier to save myself the effort of aligning the triple arms.