“Proporzione Divina”, to find the divine proportion was the modest target which the writing instruments manufacture Visconti set themself. In search for the perfect fountain pen, both round as well as angular shaped inspired by Leonardo da Vinci’s famous illustration of the “Vitruvius Man”. The unique designed pen gaplessly corresponds with that aforementioned golden mean proportion and finally fulfills an instrument with the ideal aesthetic impact and a sensational writing experience.