Insert box for Mitutoyo caliper case

This is just a box to put into the dead space inside of a Mitutoyo caliper case. It is designed to use piece of 3d printer filament as the hinge pin. I use it for spare batteries and to hold small parts when I am measuring. This is my first upload, but seemed like a good start after I have printed a few of these off the past couple of days for a couple of friends and co-workers.