The "storm glass" or "goethe barometer" is regarded as the oldest barometer in the world. Hand-blown replica of those are used on clipper ships. It will actually forecast weather changes 8-to-12 hours ahead, by barometric pressure. Water level in the spout falls for fair weather and rises for a storm. Features: 1) storm glasses, or glass barometers 2) sizes: 9-28" 3) customer's designs are welcome Inner packing: Polyfoam and gift box (drop test passed)