Scientific, Instrument, Compass, Diptych Dial, Portable Sundial

Diptych Dial [Traveler’s Portable Sundial Compass] Negelein, Nuremberg: 2nd Quarter 19th Century Boxwood, applied printed paper, inset compass 2.75 inches length, 1.75 inches width, .5 inches depth (closed) An antique traveler’s portable (or pocket) folding sundial compass made in Germany for the English and American market. It was intended for personal travel in the United States, England, and Western Europe. Technically known as a diptych dial, it has a wooden two-part case comprised of an upper leaf (sometimes called the top leaf) and a lower or horizontal leaf (sometimes called the bottom leaf or horizontal dial) that are hinged to close to protect the interior string gnomon, gnomon dials, and compass when not in use. Product description continues below.

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