thermometer time line By Revenmister Jan 1, 1593 gallio thermo Feb 2, 1612 Santorio Santorio Jun 10, 1612 first mouth thermo Mar 3, 1654 Ferdinand II Apr 4, 1714 Fahrenheit thermo May 6, 1714 Fahrenheit scale May 7, 1742 cellsuius scale May 8, 1848 Kelvin scale Jul 10, 1867 first practical medical thermo Jul 11, 1984 first ear thermo
