Tim says: Ever wish you could find the perfect all-in-one tool to help design your projects? Well, consider your wish granted. This Design Ruler is perfect because it has so many features packed into one sleek tool. This clear acrylic ruler allows you to see exactly what you?re working on. It has a grid background for perfect placement, a center measuring guide, a straight edge for drawing lines, a metal edge for cutting, and evenly spaced holes for piercing ? it simply has it all?