Charting KitThe Davis Charting Kit es with one-arm protractor course plotter protractor triangle parallel rules dividers pencil and instruction booklet. It"s all organized in a 5 ¾" x 16 ¼" (146 mm x 413 mm) heavy gauge plastic storage case. An excellent gift idea for cruisers and racers alike. Product : DAVIS CHARTING KIT - COMPLETE Manufacturer : DAVIS INSTRUMENT Manufacturer Part No : 083 UPC : 011698008308