Hello, Al . It is a Draw Gauge for cutting leather strips , from shoelace width , up to 4" wide strips. It is unmarked, but looks like it was made by C S Osborne. I have seen these in all steel , and steel with a wood handle . This is the first one I have come across that has a brass frame with wood handles. As the name suggests, it is drawn toward you to slit the leather. The tool is sometimes referred to as a Slitter.
