The GemRed 82305 Digital Angle Finder Protractor has some Sharp AF edges so this not only protects the tool, but protects everything from it's sharp edges.  Great Tool otherwise!

This was printed in two pieces because it doesn't fit on a Prusa mini.  It was also printed tall because the “best” way to print for me.  Also used ASA, but use whatever filament you like.

 https://www.amazon.com/dp/B00W395R5E?psc=1&ref=ppx_yo2ov_dt_b_product_details