Hi Pete,
Thank you for your suggestion. Actually I have already in my tool collection the caliper you mention.
But I would like to show you something. In fact the Mauser caliper has a normal size not compatible with the space available in the tool box. Actually the caliper in the tool box has a reduced size as you can see in in the attached photos (on the top the reduced caliper, on the bottom the standard Mauser caliber).
The second photo shows the caliper with his original Mauser banner holster.
Thank you.
Cheers,
Mauro