Scale?

[mb3]

When looking at antique rifles what does the term scale refer to regarding the condition of metal parts?

[John Holland]

Scale equals old heavy built up rust.

JDH

[mb3]

Ok thank you.

[RangerFrog]

... or if you are the seller, it is "strong original patina." :p:p:p

Froggie

[mb3]

... or if you are the seller, it is "strong original patina." :p:p:p

Froggie
So I am guessing that it is pretty much a bad thing? I have seen so many antique firearms that have pitting and other issues. Makes choosing difficult.