The plan tools white dial graduated in inches and centimeters (36" = 92cm), and the yellow dial in ½", ¼", 1/8", and 1/16" to the foot. It includes leather-like vinyl pouch for protection and is ideal for blueprints, map scaling, and drawing. Determines distances in miles or kilometers on maps and plans according to scales indicated on dial. It assures precision measurement forward or backward and follows curved lines using precision metal gears. It also has a reset revolution counter.