B66-59 FOLDING PROTRACTOR. Brackett Patent. Patented in 1885 by Cephas Brackett of Jordan, NY, and manufactured by him. A circular protractor, 4" in diameter, that folds in half for easy carry. It also includes a measuring wheel to allow it to be used as a traveler. Marked with the patent information, and includes some ornate decoration around the center. A few patches of surface oxidation but no rust or pitting. The only one we've seen. From the collection of Steve Dice. Good 200-400