Anemometers are essential meteorological instruments used to measure wind speed and, in some cases, direction. They play a crucial role in various applications, from weather forecasting and aviation to HVAC systems and sports. This category encompasses a wide range of anemometer types, each with its own operating principles and suitability for different environments. Traditional cup anemometers, with their rotating cups, are widely recognized for their simplicity and robustness. However, more advanced technologies, such as ultrasonic and thermal anemometers, offer greater precision and responsiveness. Among the thermal anemometers, the hot wire anemometer stands out for its ability to measure even very low air velocities with high accuracy. This type utilizes a heated wire, and the wind’s cooling effect on the wire is used to determine wind speed. This makes hot wire anemometers particularly valuable in applications requiring precise airflow measurements, such as laboratory settings, clean-rooms, and HVAC system diagnostics.