An invention that goes back centuries and still intrigues, baffles, and amazes. This great conversation piece is a handblown glass vessel with an elegantly shaped spout. A weather glass is basically a water-based barometer that measures atmospheric pressure. Fill it with colored water to approximately one inch above where the spout joins the glass body. King George III collected scientific instruments, not for function but for form and beauty. The brass arch, mahogany base, and brass details turn this weather glass into a work of art.