Signes Grimalt by Sigris - Galileo Galilei Thermometer | Glass Thermometer | 24x5x5cm | Color: Transparent Measures: 24 x 5 x 5 cm | Weight: 0.1 Kgs. | Material: Glass, Glass Galileo thermometer in the shape of a cylinder, small size. Each ball has a metal plate with the temperature recorded The temperature set is the lowest of the ascended balls Based on the principle of buoyancy depending on the density of a liquid and which changes according to temperature The crystal balls are immersed in an inert liquid and all materials are harmless. It's a good addition for the home, schools, restaurants... Measures: 24 cm x 5 cm x 5 cm Material: Glass, Glass Net weight: 100 grams. The Decor And Go manufacturer's reference number for this black item is: 62157