Creative Expressions Deckle Edge Ruler. This is a fabulous new tool from Creative Expressions which makes it easy to give card and paper a rough torn look. Hold the ruler down just inside the edge of your paper and gently tear it along the edge of the ruler. The deckle effect is in two sizes one on each side of the ruler, to give you a choice of the depth of deckle that you want to create. This is perfect for creating the torn, uneven edges that are used in vintage style and shabby chic designs. The ruler is a standard 12 inch or 30cm length, and made from durable plastic.