Wood hardness test in the field?

Is there anything out there? Thanks

 

Theres the Janka hardness scale.

 

I can’t think of any way to do that easily by just anyone in the field.
I’m thinking drop a pointed metal slug down a pvc pipe and see how large of an indent it makes.

 

Dead barkless black locust is a good test.

 

If I can easily get the pointy end of my scrench in a maple log cut end I leave it in the woods to finish rotting. Can almost tell when cutting it though.