Henrici Glareani Heluetii poetae laureati de geographia liber unus
A Latin geography treatise by the Swiss humanist Henricus Glareanus, printed in Venice in 1549 by the Nicolini heirs and issued at the instance of Melchior Sessa for scholars of cosmography. Its pictures are small geometric diagrams: a dial-like astronomical instrument with numbered sectors, concentric circles divided by crossing lines and lettered points, and a plain half-circle shape. A designer might take from them the clean radial layout of early scientific diagrams and the way lettered labels sit on rings and axes.
