What is the use of the thermometer?

Thermometer thermometer is a kind of household, also called maximum and minimum thermometer. Often used to measure the temperature. Table calibration points usually two degrees Fahrenheit and Celsius. Thermometer built-in temperature material into alcohol, the boiling point of alcohol ( ℃) : 78. 3, low, easy to measure the temperature, the liquid column tube for vacuum, and the inner diameter of the liquid column tube small, using the properties of liquid heat bilges cold shrink, and made the thermometer. Thermometer has a simple structure, reliable work, convenient observation value, use for a long time without maintenance. General measurement range of thermometer for - 30 ℃ to 50 ℃; Before its using method is as follows: 1, survey, observation to use thermometer, understand its range ( Measuring range), And dividing value ( Each small case the corresponding temperature value) ； 2, it is fixed in the position of the indoor temperature is relatively stable, prevent sun direct illuminate; 3, to stay stable readings after reading; 4, can't take down the thermometer (when reading Fixed thermometer is should take into account the ease of reading 。