The White Sturgeon Release Ruler is an innovative fish ruler meant for measuring White Sturgeon. The contrasting color combinations provide easily readable measurements to decrease time for a quick release. Don’t have a scale handy? The Release Ruler is the fish ruler to measure not only the length of your White Sturgeon but also provide the estimated weight based on scientific data for the average sizes of White Sturgeon. Stop guessing! Use the Release Ruler today. The ruler is a durable PVC coated vinyl which is built to stand up to the toughest conditions Sturgeon fisherman encounter. The White Sturgeon Release Ruler measures 2” x 120”.