Millwheel
Millwheel or water wheel in heraldic arms / From Wikipedia, the free encyclopedia
Millwheel or water wheel are sometimes used as a charge in heraldic arms. The water wheel is often used to symbolize the food processing industry or industry in general.
For the data-processing framework, see Google MillWheel.
The heraldric millwheel is usually stylized and may look different in the heraldic traditions of different countries.