Liquid thermometer, manufactured after the idea of Galileo Galilei (1564-1642). Searching for exact temperature measurements the brillant Galileo Galilei discovered this fascinating method. In liquid, a solid body with the same weight and size is compelled to go down as the temperature rises. On the other hand the solid body goes up in the liquid, if the temperature falls. The glass balls differ in weight and considering the densitiy of the liquid, the lowest of the floating balls in the upper part of the cylinder indicates the right temperature. The production of this instrument is extremly complicated. Each ball is calibrated exactly. Two glass balls differ in weight by only hundredth of gram. High quality German made.. made of glass, after the idea of Galileo Galilei, measuring range 18 - 26 ºc (64 - 80 ºf), graduation 2 ºc (4 ºf), 5 balls, multi-colour, with gold tags 50 mm, 330 mm, 840 g
Galileo Therm 33cm
