Classic Cup Anemometer - Historical Wind Speed Measurement Instrument #303625 (License: Personal Use)

This black-and-white illustration depicts a classic cup anemometer, featuring four hemispherical cups arranged radially on horizontal arms attached to a vertical shaft. The device measures wind speed by counting rotations per unit time, with internal gearing visible near the base for mechanical readout. Its robust, symmetrical design ensures reliable operation in varied weather conditions.

Used in educational materials, meteorology history pages, and instrument documentation; matches user intent to understand or identify vintage weather measurement tools.