The American Society for Testing and Materials (ASTM) has proposed a standard method for testing the performance characteristics of a wind vane. This report presents the procedures used to test and evaluate the ASTM method, and the results of that evaluation. Twelve wind vanes were borrowed from their manufacturers and tested using the ASTM procedures. The theory of wind vane dynamics is briefly reviewed. Measurements of starting threshold, starting accuracy, delay distance, overshoot ratio, and damped wavelength were made. Damping ratio and natural wavelength were computed from the measurements.