A thermocouple can be used.
A thermometer
An instrument used for measuring a quantity of something is called a measuring device or a measuring instrument. Examples include a scale for measuring weight, a ruler for measuring length, or a thermometer for measuring temperature.
A thermocouple or a pyrometer would be used to measure a temperature of 900°C. These instruments are designed to withstand high temperatures and provide accurate temperature readings in such conditions.
Force meter is the instrument used in measuring force.
A pyrometer is commonly used to measure the temperature of hot metal. It works by detecting the infrared radiation emitted by the metal and provides a non-contact method of temperature measurement, making it ideal for high-temperature applications.
A thermometer is commonly used to measure heat. It works by detecting changes in temperature and displaying the results on a scale. There are various types of thermometers, including digital, infrared, and mercury thermometers, each with its own method of measuring heat.
A megger is an instrument that generates a high voltage. That high voltage is then used for measuring insulation resistance, especially that of electrical devices.
There are many tools used in recording and forecasting the weather. For example an anemometer Anemometer, an instrument for measuring wind speed. A hygrometer is used in determining the humidity of the atmosphere. The thermometer is for measuring temperature.
A scale
Weighing scales
A protractor
micrometer