Gimbaled compass attributed to Christoph Schissler. There is a hook for hanging the instrument from the saddle-bow and a gilt brass counterweight to hold it steady. Rests on a wooden stand and is fitted with a lid carrying an engraved and enameled color geographic map. Housed in a gold-stamped leather box. Brought to Florence from Germany by Prince Mattias de' Medici in the first half of the seventeenth century.