The award winning Pike & Muskie ruler is a must have for any fisherman. The ruler is made from durable PVC which is tear-resistant and easy to stow. All of our rulers are dimensionally stable or in other words, true to scale. Release Rulers are also patented as the only ruler to provide weight and length estimates specific to each species on the ruler. You will simply not find a higher quality ruler with this much information on the market today. Do you have any questions please e-mail us at firstname.lastname@example.org All of our rulers are backed by a 100% Satisfaction Guarantee.