M. Reich's Beautiful Old Solid Brass Mitering Tool (?) antique geometry notebook which included a fantastic collection

which included a fantastic collection of mid-century and contemporary ceramics from Japan

arrowheads

and I must say it is pretty pure pleasure going through them

Just the figure measures 4 5/8" t

M. Reich's Beautiful Old Solid Brass Mitering Tool (?) antique geometry notebook which included a fantastic collectionI 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