The Sand Glass

An sandglass(hourglass) is a device that puts dry sand in a glass bowl in the middle and slowly measures the time when the sand falls by gravity. It was first used in the 14th century, and it was widely used in the 15th century.

Inside the glass bowl, a small round part is inserted to control the amount of sand falling, and a 1x1 round tile instead of sand or a small gold coin of Lego is also considered. The decorations use lions, fishes, and dragons representing the land, sea, and sky as a motif. Connected 4 Chains mean time continuity.