T Square

I could not find a T-square with a ruler available online or on 3D sites, so I made my own, I use it for bookbinding and in conservation as a photographic scale and ruler. I printed it face down and started with the grey, then white and black and it came out great. If you have any suggestions on how I can improve, please leave a comment. Thanks

Boost MeI would really appreciate the boost. Hope this tool helps!