Model Number: SD102/8 Key Specifications/Special Features: The sundial is the oldest known device for the measurement of time and the most ancient of scientific instruments.It is based on the fact that the shadow of an object will move from one side of the object to the other as the sun “moves” from east to west during the day.Used material:BrassFinish: Brass antique & blue patina also available.Item code & size: SD102/8 -20 X 20 X 0.3 CM. SD101/6 - 16 X 16 X 0.3 CM.Packing: 1 piece/inner, 18pieces/master