Chinese Stone Grinding Wheel

Round, mostly. The hole in the middle is the only part that was negotiated.

This grinding wheel comes from Shandong Province, China, and dates to the 18th century or earlier. It is stone. Farmers in rural China used wheels like this, turned by people or draft animals on a pole through the center, to crush grain, beans or oil seed. The face is rough and speckled in pink and grey, the outline slightly irregular. A squared opening narrows to a round hole at the center. Thirty-two inches high and thirty-one wide.

Lunch once depended on it, or something very like it.