themagicfarawayttree: Diptych Dial, by Thomas Tucher, Nuremberg, c. 1620. “Diptych dials are portable instruments, usually made from ivory. They were mainly produced in Nuremberg from the late fifteenth century onwards. They are based on the principles of vertical and horizontal sundials.”
16th Century Gun Powder Flask-Sundial Compass Watch.
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Hans Troschel the Younger | Portable diptych sundial | German, Nuremberg | The Met
Cadran Solaire multiple par Blondeau
Polyhedral sundial with 26 faces, dating from the 16th century. On display at the Museum of the History of Sciences in Florence, Italy. Artist: Tomsich. [Click for Hi-Rez] (via http://fineartamerica.com/featured/polyhedral-sundial-tomsich.html )
"The Museum of the History of Science, Oxford has a polyhedral sundial in the shape of an octagon that has been attributed to Nicolas Kratzer: The sundial made about 1425 for Cardinal Wolsey. The four-sided base has Wolsey's arms, the arms of York Minster, and (on two sides) a cardinal's hat."