Solar quadrant

Sundial, known as a diptych solar quadrant because of the two sheets that comprise it, joined by hinges. These feature the timelines of a horizontal clock, and those of another, vertical one. The silk thread that crosses the dihedral functions as the style. There is a small compass for orientating the quadrant’s horizontal plane.

On the top there is a list of the main cities of the world, with their corresponding latitudes.

This type of diptych solar quadrant became widespread in the 16th and 17th centuries, especially in southern Germany. The quadrants were made from different types of materials, such as ivory, wood, gold and silver.
the timelines of a horizontal clock, and those of another, vertical one. The silk thread that crosses the dihedral functions as the style. There is a small compass for orientating the quadrant’s horizontal plane.