The International Log Rule is designed for estimating board feet in a cut log and is generally considered to be one of the most accurate scales available. It is made from northern hardwood to assure durability and long life. Large black figures are imprinted and the entire rule is sealed to minimize wear. Heavy brass end piece on one end for accurate measurement. Overall size: 36″ long x 1 1/2″ wide x 7/16″ thick.