Get more accuracy in your ceramics work with the DiamondCore Shrink Ruler. This flexible, two-sided plastic tool is designed to measure clay shrinkage with ease. Each side of the rule displays two shrinkage percentages, with 6% and 10% shrinkage on one side, and 12% and 14% on the other. Simply measure the intended finished size of your piece, find the corresponding dimension on the rule for the shrinkage rate, and shape your wet clay according to the measurement. This ruler helps ensure accuracy and eliminates guesswork, acting as an essential tool for potters of all skill levels. - DiamondCore Shrink Ruler.