With all the new phones and tablets, we might not use pen and paper that often anymore. But for many of us, a notepad, a good pen and a solid straight edge are always the way for designing, notes taking and analog illustrations. If you are sticking to the old fashion way to get things done, look no further, here is the tool for you. Rule One is a unique design solution combining pen and ruler, which can be easily and securely inserted into any notebook. With this beautifully and functionally crafted tool, wherever you can show your professional skills as a designer.