Compass ferrule/holde

This is a small thing to hold a 12mm diameter compass on a paracord, it was designed to add to a Swiss Army Knife, my original intention was to add the compass to the scales but the SAK has a number of magnetic tools which prevent it working and I couldn't figure out a way to lock the compass in place on the scales and then unlock it for use away from the SAK - I'll perhaps come back to this problem in the future as it would be a more elegant solution.

The scales features in the picture are my Plus^2 scales and can be found here
https://www.thingiverse.com/thing:4548958

Please post your makes and revisions - it makes me happy!