Angle Measuring Tool

Here is a easy tool I would have loved very much in the past ... if I had had one ...
I saw it some days ago on Youtube.
This is a simple copy of the tool.

https://www.youtube.com/watch?v=c1i0VAYcC84

Print:
2x Arm long
2x Arm short
4x Fastener

Screw together with M4x10 screws (4x) and M4 Nuts (4x)

ENJOY !!!