M. Reich's Beautiful Old Solid Brass Mitering Tool (?) vintage kachina doll I found and quickly sold

I found and quickly sold three birds by Yves Robitaille several months ago

6 5/8" long

and very sturdily attached

Plenty of room to fit a hand inside

Photos show the wonderful alternating and layering use of purple

M. Reich's Beautiful Old Solid Brass Mitering Tool (?) vintage kachina doll I found and quickly soldI can't find another tool quite like this, but it sure is a beautiful thing. My guess is that it is a mitering tool of some sort, and I wonder perhaps if M. Reich was perhaps a frame maker? Whatever the case, I have to think Reich valued it a great deal, stamping it with his (or her) name a total of seven times (!)) and I'd think brought a lot of joy, too, as it is a tremendously satisfying thing to hold in one's hand. Solid brass (I believe brass