The Northland Ruler Scale is made from durable, UV- and waterproof vinyl, allowing it to accompany you on all your fishing adventures without worry of damage. The Ruler Scale can be attached anywhere on a boat or a backer board. With the Northland Ruler Scale, you can measure quickly and easily!Made from durable UV waterproof vinylCan be easily attached anywhere in a boat or on a backer boardMeasure quickly and easilyGreat for measuring slot limit catches, for culling catch and release