Thermometric standards

Thermometric standards are fixed points used as reference temperatures in calibration processes to ensure accuracy across thermometers. They include well-defined temperature points like the melting of ice (0°C), the boiling of water (100°C at standard pressure), and the freezing point of certain metals or substances like helium and sulfur. These standards provide a consistent basis for measuring and comparing temperature readings worldwide, ensuring that thermometers are accurate and reliable. By using these known fixed points, calibration maintains consistency and precision in temperature measurement across various industries and scientific applications.