1) A nice Galileo thermometer with clock and hygrometer functions.
    2) In Galileo thermometer, there are five glass balls with tags which indicate different temperature.
    3) Glass balls with the same weight and size sink when temperature rises, and they ascend when temperature falls.
    4) 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.
    5) Hygrometer is a commom instrument to measure the air humidity.
    6) It is a classic design to be a gift for office display.
___________________________________________________________________________________________ Size: Thermometer dia:3.6cm
          Height:23cm
Number of glass balls: 5