History of Thermometer By mgorges21 May 3, 1593 Galileo's Thermoscope May 3, 1612 Santorio Thermoscope Nov 9, 1612 Mouth Thermometer first made in 1612 but was too big and quite inaccurate. Sep 14, 1654 Ferdinand II Thermometer Jan 25, 1714 Fahrenheit Thermometer Dec 25, 1724 Fahrenheit Scale Apr 8, 1742 Celsius Scale Jun 16, 1848 Kelvin Scale May 18, 1867 Medical Thermometers Jul 31, 1984 Ear Thermometer
