The line of sight is parallel to the thermometer. Turn the thermometer slowly, and when you see a thin line, you will reach a position of several degrees.
2. What do you think of electronic thermometer?
After hearing a "wow", after the measurement is completed, take off the thermometer to check the screen temperature index.
3. What do you think of infrared ear thermometer?
After the measurement is completed, remove the thermometer to check the temperature index of the screen.