16960744 1 m

McCann Thermometer

  • The First Thermometer

    The First Thermometer
    The first thermometer was made of mercury in 1714. the first thermometer was very contagious when broken because mercury is bad when it enters your immune system and above the mercury is nitrogen.
  • 1700's mercury thermometer by Daniel Fahrenheit

    1700's mercury thermometer by Daniel Fahrenheit
    Only two were made and were known to exist both in a museum and in the netherlands.
  • A Medical/Clinical Thermometer

    A Medical/Clinical Thermometer
    This thermometer can be placed under the tongue or under the armpit to se if you have a fever.
  • The First Alcohol Thermometer

    The First Alcohol Thermometer
    Everyone noticed that mercury was very poisionous so they changed to a non poisonous thermometer with red alcohol.
  • The First Electronic Thermometer

    They are now digital and