Signes Grimalt by Sigris - Galileo Galilei Thermometer | Glass Thermometer | 43x7.7x7.7 cm | Color: Transparent Measures: 43 x 7.7 x 7.7 cm | Weight: 0.75 Kgs. | Material: Glass, Glass Galileo cylinder-shaped thermometer, large size 0.75 Kg. 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: 43 cm x 7.7 cm x 7.7 cm Material: Glass, Glass Net weight: 750 grams. The Decor And Go manufacturer's reference number for this black item is: 62207