What's the difference between holding a thermometer in your mouth and holding it under your arm? Which is more accurate?

First of all, the measurement methods are different.

1. Oral thermometer: throw the mercury column of the sterilized thermometer below 35℃, place the mercury end at the hot spot under the tongue, tightly seal the mouth and lips, and measure the reading after 3-7 minutes.

2. Mercury thermometer: First, lower the reading of the mercury thermometer to below 35℃, and then clamp the mercury end of the thermometer on the top of the armpit. Make sure that the thermometer is in close contact with the skin, and take it out after about 5 minutes.

Second, the accuracy is different.

Mercury thermometer has the advantages of accurate indication, high stability, low price and no need for external power supply. When the arm can't move freely because of too many clothes, it is not convenient to measure the underarm temperature, it will be more convenient and faster to choose an oral thermometer.

Extended data:

Precautions for thermometer measurement:

1, be sure to see the position of the mercury column before each use, and it is best to throw it under the scale before and after each use.

2. After each use, disinfect with alcohol in time.

3. When measuring the temperature under the armpit, it is best to dry the sweat under the armpit.

4. The measurement time is preferably five minutes. Too short a time will easily lead to low and inaccurate measurement results.

5. When reading, it is best not to touch the position of the mercury bubble, so as not to affect the result.

Baidu encyclopedia-oral thermometer

Baidu encyclopedia-mercury thermometer