with dioptric lenses

It was widely used during the 17th and 18th centuries in scientific debates over the relative merits of the competing central Earth and central Sun theories

Never was so Much owed by so Many to so Few

Stands approximately 12" high

IT REMAINS COOL TO THE TOUCH ON THE OUTSIDE - so it can be used on a table

Tear Drop Galileo Thermometer, small, 11.5cm Size:11.5cm with dioptric lensesOur distinctive ornamental (but functional) thermometers utilise 17th century astronomer Galileo Galilei's discovery that the density of liquids varies with temperature. Carefully weighted glass globes are suspended in a liquid filled tube, where they sedately sink or float as the surrounding air gets hotter or colder. Temperature is indicated by the engraved brass tag on the lowest floating globe. Temperature is shown in Celsius.