Reproduction of a Diptych dial, known as Pocket sundial. With a "weight ball" to check the balance of the instrument. Dated between 16th-17th Centuries.
Hand crafted of brass and wood with green paint finish accented with a brass clasp and hinge. Featuring a compass and cotton shadow line. Orient the compass north and let the shadow tell your solar time.
Quadrants with a compass, introduced in the 15th century, were the first portable sundials. The compass served to face the quadrant toward the north and the gnomon (a bit of cord or a flexible triangle) could be raised or lowered to accommodate the latitude where the compass is used.
The golden age of sundials lasted from the 15th century to the end of the 18th.