infrared thermometer

  • 11,984 BCE

    Thermoscan human ear

    Fraden Corp invented this device.
  • 1867 BCE

    First practical thermometer

    An English physician named Sir Thoman Allbutt invented this and it was portable and was used to measure body temperature.
  • 1848 BCE

    Kelvin scale

    Lord Kelvin developed the Kelvin scale
  • 1742 BCE

    Centigrade scale

    Anders celsius invented the centigrade scale (centigrade scale)
  • 1724 BCE

    Fahrenheit scale

    measured temperatures more accurately.
  • 1714 BCE

    mercury thermometer

    Daniel Fahrenheit developed the mercury thermometer.
  • 1709 BCE

    alcohol thermometer

    In 1709, Daniel Gabriel Fahrenheit invented the alcohol thermometer.
  • 1612 BCE

    Mouth Thermometer

    Santorio Santorio invented the first oral thermometer. However it was considered more of an unsuccessful invention due to it's bulkiness.