This elaborate Raybone four-fold broad boxwood rule has a level vial, and brass arch joint that is scribed into a 180 degree protractor. The result is to have a folding rule that functions as a level, protractor, and inclinometer. It is further graduated with 1/8 and 1/16 inch scales as well as architect scales. It is bright and clean and in near perfect tight condition. It will be hard to find a nicer one. Fine.
Price - $100.00