Portable diptych sundial, Hans Troschel the Younger, 1620

German, nuremberg; portable diptych sundial; horology. Date: 1620. Dimensions: 3-7/8 x 2-5/8 in. (9.8 x 6.7 cm). Medium: ivory and brass. Collection: Metropolitan Museum of Art. Portable diptych sundial MET 33339