This is a beautiful solid brass antique reproduction of a sundial with an internal magnetic compass. The brass sundial compass is polished to a beautiful bright finish. The magnetic compass allows the sundial to be oriented North. The sun's shadow cast by the sundial's vane marks the local time. The top of the sundial can lay down flat, and both the latitude scale and the sundial vane are hinged to lay flat for compact storage. The hardwood case measures 4 1/4 inches square, 2 1/4 inches tall, and weighs 10.4 ounces.