Caption:
Title page Ludolf van Ceulen, Vanden circkel (Delft 1596). Bust of Ludolf van Ceulen (Hildesheim, 28 January 1540 - Leiden, 31 December 1610) at age 56, with collar unfolded, in oval with edge lettering, framed in ornamental frame with scrollwork and arms. Below the portrait an image of a circle with a description of the number pi. Below the image a four-line Dutch caption. Around the print, title information in letterpress. Van Ceulen was a fencer and mathematician. He was appointed (according to Meursius in 1599, according to the Curators' resolutions on 10 January 1600) on the recommendation of Prince Maurits together with Simon Fransz. van Merwen as professor in the 'Nederduytsche mathematicque' in Leiden. Calculated the number pi (the ratio between the circumference and the diameter of a circle) in 35 decimal places, Title page Ludolf van Ceulen, Vanden circkel (Delft 1596), with portrait of Ludolf van Ceulen at the age of 56, print maker: Jacob de Gheyn (II), (mentioned on object), printer: Jan Andriesz Cloeting, (mentioned on object), print maker: Leiden, printer: Delft, 1596, paper, engraving, letterpress printing, h 292 mm × w 171 mm, h 153 mm × w 108 mm