Learn about your climate while tracking weather changes and conducting experiments on the Greenhouse Effect. Completed station measures 8-1/2" x 4-3/4". Includes thermometer to measure temperature, plastic tube/rain gauge and anemometer to measure wind speed (does not give a precise measurement. The faster the anemometer spins the higher the wind speed). Also includes a wind vane that measures direction (points in the direction from which the wind is blowing) and a compass, which gives reference point for wind direction. Does not measure air pressure or evaporation. Reusable.