Tell Time Like Early Navigators
Flash back to the 15th century with this model of the very first star dials used by navigators to tell time. This ancient tool still works accurately, because is based on the North Star, which is almost directly on the axis of the Earths axis of rotation and always appears in the same position in the sky.
Simply set the middle wheel to the month, hold the dial upside down, and sight the North Star through the center hole. Move the top of the dials arm to align with the uppermost stars of the Big Dipper, and read the time on the inner dial where the arm crosses the hour mark. The reverse side is outlines of the major constellations. Pewter finishes; comes with instructions.