I found this small four inch tri square at a flee market for $8.
I have not been able the make out the maker mark, looks like Rich-Con
It is in pretty good condition for being 106yrs old
It is also right-on square.
It is much easier to use when working on small stuff.
Anyone know about Rich-Con?
I love finding good old tools.
-- Being focused on a project is the best meditation, it allows you to live in the moment"