Today, as we are living in highly advanced era of science and technology, we have equipments and tools for almost everything. In this regards, Preskograph Boards are an unparalleled and effective system of interchangeable letters & figures and graph symbols with which all kinds of information of knowledge can be showed in an appropriate manner bejoint pressing the letters and figures and graph symbols in the closely perforated back ground. It can be changed at user's wish. It is perfect for instantaneous layout planning and the first and primary knowledge of upcoming events. These Boards are must to have for almost all the offices, institutions, university, and the likes.