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2. These Infrared Thermometers Can Check Temperatures ... - AOL

   www.aol.com/infrared-thermometers-check...

   Mobi Non-Contact Forehead Thermometer. Price: $45 from Walmart Buy It This infrared thermometer is a top seller at Walmart, and most buyers give it positive marks (including some business owners ...

3. Indoor–outdoor thermometer - Wikipedia

   en.wikipedia.org/wiki/Indoor–outdoor_thermometer

   In an indoor–outdoor thermometer based on a conventional liquid-in-glass thermometer, the stem of the outdoor thermometer is connected to the bulb by a long, flexible or semi-rigid capillary. The temperature scale is marked on the stem as usual. However, the temperature that is actually measured is the temperature at the bulb. [1]

4. Mercury-in-glass thermometer - Wikipedia

   en.wikipedia.org/wiki/Mercury-in-glass_thermometer

   A medical mercury-in-glass maximum thermometer showing the temperature of 38.7 °C (101.7 °F). One special kind of mercury-in-glass thermometer, called a maximum thermometer, works by having a constriction in the neck close to the bulb. As the temperature rises, the mercury is pushed up through the constriction by the force of expansion.

5. Thermometer - Wikipedia

   en.wikipedia.org/wiki/Thermometer

   A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the pyrometric sensor in an infrared thermometer) in which some change occurs with a change in temperature; and (2) some means of converting this change into a numerical value (e.g. the visible scale that is marked on a mercury ...

6. Thermostat - Wikipedia

   en.wikipedia.org/wiki/Thermostat

   Early technologies included mercury thermometers with electrodes inserted directly through the glass, so that when a certain (fixed) temperature was reached the contacts would be closed by the mercury. These were accurate to within a degree of temperature. Common sensor technologies in use today include: Bimetallic mechanical or electrical sensors.

7. Barometer - Wikipedia

   en.wikipedia.org/wiki/Barometer

   The density of mercury will change with increase or decrease in temperature, so a reading must be adjusted for the temperature of the instrument. For this purpose a mercury thermometer is usually mounted on the instrument. Temperature compensation of an aneroid barometer is accomplished by including a bi-metal element in the mechanical linkages.