Temperature calibration involves the process of verifying and adjusting the accuracy of temperature measurement instruments to ensure they provide correct readings. In military equipment, this process is crucial for various components. For example, heat treatment furnaces used in manufacturing weapon parts require precise temperature control to achieve the desired material properties. According to industry standards like AMS2750E, temperature uniformity surveys (TUS) are conducted to ensure that the furnace maintains consistent temperature throughout its working zone. By adhering to these calibration practices, defense manufacturers can produce components that meet stringent quality and performance standards.