Rotary sprinklers are devices used for watering gardens, lawns, and agricultural fields. They work by rotating a spray arm that distributes water in a circular pattern. This allows for even coverage over a large area, making them efficient for irrigation. These sprinklers can be adjusted to control the distance and angle of the water spray. Some models are powered by water pressure, while others may have a motor. Rotary sprinklers are popular for their ease of use and ability to conserve water compared to traditional fixed sprinklers.