How to read a thermometer

The thermometer generally used is the mercury thermometer, the mercury thermometer reading needs to be rotated to the right position in order to clearly see the mercury column, so as to read the temperature, the specific steps are as follows:

1. Hold the end of the thermometer in one hand, that is, away from the end of the mercury column.

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2. Slowly rotate the thermometer in any direction you like, don't turn it too fast.

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3, rotate it until you see a very thick column of mercury from the front, then stop rotating it, and you will be able to read the degree.

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4. After the reading, place the mercury thermometer in a safe place.

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Note:

1, in the above During the operation, be careful never to touch the mercury end of the thermometer with your hand, as this will affect the mercury column and cause inaccurate measurements.

2, the operation of the fourth step it is best to read the mercury thermometer to shake a little, the mercury column to the reading below the line, easy to use next time.

3, if the operation of the fourth step did not throw the mercury column to the reading below the line directly stored in a safe place, the next time you use the mercury column must be thrown to the reading below the line and then use, or the temperature will be inaccurate.

4, the operation of the fourth step, be sure to put the mercury thermometer to a safe place, especially at home with children, because the mercury thermometer is the outer surface of the glass, very easy to break, after the fall of mercury will flow out, mercury is a poisonous liquid, if the child consumed will cause mercury poisoning.