Navigation: a man using a Jacob's staff (cross staff), various other measuring devices at his feet. Woodcut, 16--.

He is standing in a field at night: the moon and stars are shown above (though by artistic licence the land is not in darkness). In the distance is a town with a church steeple. Geometrical devices are shown on the ground in larger than natural size. Left, another Jacob's staff of a different kind from the one being used