<p>Research on wind speed measurement accuracy is of great significance for meteorological disaster prevention and reduction and wind power generation. Anemometer calibration devices (ACD) play a crucial role in ensuring the accurate transmission of wind speed values. To guarantee the stable performance and reliable transmission of the ACD. In practical applications, accurate wind speed measurement is essential for meteorological departments to issue accurate weather forecasts and early warnings, reducing the losses caused by meteorological disasters. This study conducted a verification research on the calibration results of ACD. Firstly, the working principle and calibration method of the assessed ACD are introduced. Then, the Guide to the Expression of Uncertainty in Measurement (GUM) is used to evaluate the measurement uncertainty. A wind speed sensor and a portable three-cup anemometer are selected and calibrated with the device to obtain calibration results. Finally, these calibrated objects are sent to different calibration institutions for recalibration, and both transfer comparison method and comparison method are employed to verify the calibration results. The key conclusions are as follows: The wind speed sensor is more stable than the portable three—cup anemometer. When using the transfer comparison method, all measured anemometers passed validation. However, when using the comparison method, the portable three—cup anemometer failed to meet verification standards at some wind speed points due to its own poor stability rather than inaccurate ACD calibration. The transfer comparison method has traceability, accuracy, and reliability. The studied ACD studied has stable performance and reliable transmission capabilities, making it suitable for calibrating working—level anemometers. When verifying the calibration results of ACD, it is recommended to choose a stable device under test (DUT) such as a wind speed sensor, to ensure the authenticity and reliability of the results.</p>