Ambient Weather YG710-6 Galileo Thermometer, Barometer, Hygrometer and Quartz Clock Weather Station This traditional weather station is both a work of art and an instrument at home in any fine study, library, office or upscale restaurant The rich, wood framed classic weather station measures temperature (Galileo), barometric pressure (in and mbar), humidity (%) with analog clock. The antique weather station displays an air of quality and accuracy The Galileo thermometer consists of a sealed glass tube that is filled with liquid and several floating bubbles. The bubbles are glass spheres filled with a colored liquid mixture Attached to each bubble is a little metal tag that indicates a temperature. These metal tags are calibrated counterweights. The weight of each tag is slightly different from the others Since the bubbles are all hand-blown glass, they aren't exactly the same size and shape. The bubbles are calibrated by adding a certain amount of fluid to them so that they have the exact same density