Protective Case for Maule Airplane Fabric Tester

The Maule Fabric Tester is a hand tool used by airplane mechanics to evaluate the condition of fabric covering used on airplanes. It originally shipped with a tubular case, and mine was long ago separated from its original case. I've been wanting to learn cad design for 3d printing, and needed a case for this sensitive tool, so here's the result. I used PLA and it took a few iterations to get the clearance just right so that the top has enough friction to stay on, but is still easily removable. If you make one, let me know how it goes!