Temperature measurement using modern scientific thermometers and temperature scales goes back at least as far as the early 18th century, when Gabriel Fahrenheit adapted a thermometer (switching to mercury) and a scale both developed by Ole Christensen Rømer. Fahrenheit’s scale is still in use, alongside the Celsius scale and the Kelvin scale.

Source: Temperature – Wikipedia, the free encyclopedia

Farenheit proposed his scale in 1724 and Celsius proposed his scale in 1742.