Mystery tool

[Number_35]

My friend sent me photos of this tool. I'm stumped. Anyone know?

 

[Passport1]

It looks like it might be a tool to lock something in place so that it can be disassembled or adjusted. Doubt it is automotive. For a musical instrument repair? Does the case have any markings?

 

[paulo57509]

Center punches says, "metal work". Perhaps some kind of layout tool. There's a part missing.

 

[Warstud]

You can do a Google Image search

Google Lens

lens.google.com

 

[D60]

Kind of reminiscent of a Brinell hardness tester but not exactly