This font is based on an alphabet published by Luca Pacioli in his 1509 mathematical treatise De divina proportione. In this book, Pacioli describes how to build the Roman alphabet geometrically using lines, squares and circles.
Pacioli was not the first or the last man in his era to describe the building of letters mathematically. Felice Feliciano did this before Pacioli, and Albrecht Dürer further developed these forms years after. According to Pacioli, the thick strokes should be 1/9th of the height, and the thin strokes should have 1/2 the weight of the thick strokes.
I felt that this beautiful alphabet needed to be restored to its full geometric glory and set out to construct an accurate replica using Pacioliís instructions. Included in the font you'll find the letters that have the grid overlay and also the letters without the grid. The letters J, W, U, and Z were not included in the book, so I have created my own versions of these characters that fit into Pacioliís grid. Pacioli shows two different Os in the book, so I have included the second O as well as a second J, Q, and Z as OpenType stylistic alternates. Also included in the font are border patterns and a fleuron taken from the cover of the book.