Discription:
    1) Galileo thermometer, barometer, hygrometer and clock are all included in this weather station.
    2) Glass balls in the Galileo thermometer with the same weight and size sink when temperature rises, and they          ascend when temperature falls.
    3) The glass balls differ in weight and the density of the liquid means the lowest of the floating ball in the upper part          of the cylinder shows the accurate temperature.
    4) Hygrometer measure the air humidity around.
    5) A health nurse for your family environment.
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Size: Thermometer dia:4.7cm
          Instrument dia:9cm
          Overall Height:37cm
Number of glass balls: 7