Thermoscope is an instrument used to measure temperature changes. Synonyms for thermoscope include thermometer, temperature gauge, heat detector, and thermal sensor. Other related words include hygrometer, barometer, and anemometer. These instruments help to identify changes in atmospheric conditions such as humidity, pressure, and speed of air movement. The most commonly used thermometer is the mercury thermometer, but there are also digital and infrared thermometers available. Temperature gauges are largely used in industries like aviation, meteorology, and healthcare to monitor and maintain optimal environmental conditions for a variety of reasons. Overall, the use of thermoscopes and their synonyms play a crucial role in monitoring temperature changes in various fields.