What scale is used in clinical thermometers usually?A. Fahrenheit ScaleB. Kelvin ScaleC. Celsius ScaleD. None of these

Correct Option: A. Fahrenheit Scale
Clinical thermometers are designed to measure body temperature, which typically ranges from 95°F to 108°F (or 35°C to 42°C). In most countries, clinical thermometers are traditionally calibrated using the Fahrenheit scale for the following reasons:
1. Precision in Human Body Temperature:
o The Fahrenheit scale provides smaller units (degrees) compared to Celsius, making it easier to note slight changes in body temperature.
o Example: Normal body temperature is approximately 98.6°F, which is more precise compared to 37°C.
2. Historical Preference:
o In regions like the United States, the Fahrenheit scale has been predominantly used for medical purposes due to historical conventions.
3. Global Variation:
o In many countries, especially in scientific or international contexts, the Celsius scale is also used for medical thermometers. However, the Fahrenheit scale remains more common in clinical thermometers globally.
Summary:
The Fahrenheit scale is typically used in clinical thermometers because it provides better precision for measuring body temperature. However, the Celsius scale is also used in certain regions, depending on local practices.