Christoph Schissler (ca. 1531-1608)
Astrolabe, Augsburg, 1560
Florence, Istituto e Museo di Storia della Scienza, inv. 1114

This astrolabe, the work of one the best known craftsmen of the 16th century who also worked for Tycho Brahe and for Rudolph II, has only one tympanum. It was part of the Medici collections.