A temperature standard is a reference point used to measure and compare temperatures accurately. It ensures consistency in temperature readings across different instruments and applications. Common temperature standards include the freezing point of water at 0°C and the boiling point at 100°C under standard atmospheric pressure. Temperature standards are essential in various fields, including science, industry, and meteorology. They help calibrate thermometers and other temperature-measuring devices, ensuring that they provide reliable and accurate readings. This consistency is crucial for experiments, manufacturing processes, and weather forecasting, where precise temperature measurements are necessary.