Description 30cm 7 Spheres in Colour (Temperature between 18-26 Celsius) Already Galileo discovered that the density of liquid is changed by varying temperatures. Our thermometers are manufactured on this principle. The temperature can be read from the lead discs hanging from the coloured spheres.The weight differential of the spheres is only 2/1000 grams and ensures an accuracy of 1 C . The spheres descend lowly when the temperatures increases and rise when the temperatures falls, and can be read from the lowest lead disc of the high floating spheres. The production of these thermometers is extremly indicate and almost entirely handmade.The liquid is ozonefriendly and it is not highly inflammable and no toxic fumes are emitted. Our thermometers are not only precise measuring instruments,but at the same time very attractive ornaments
