How is a thermometer read? What are the precautions to be observed while
reading a clinical thermometer?
Answers
On a thermometer that uses the Fahrenheit temperature scale, each long mark shows a whole degree of temperature. There are four shorter lines between each pair of long lines. These shorter lines show an increase of two-tenths of a degree Fahrenheit (0.2ºF).
Thermometer should be washed before and after use, preferably with an antiseptic solution. Ensure that before use the mercury level is below 350C. Handle the thermometer with care. If it hits against some hard object, it can break.
Reading the glass thermometer (that is, determining the temperature shown) is done by holding the thermometer horizontally by the stem end (the end opposite the bulb) at eye level and rotating the thermometer until the mercury in the shaft can be clearly seen.
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Precautions Taken While Reading a Thermometer
- Thermometer should be washed before and after use, preferably with an antiseptic solution.
- Ensure that before use the mercury level is below 350C.
- Handle the thermometer with care. ...
- Dont hold the thermometer by the bulb while reading it.