How big is Cixi's old-fashioned pot called Ruler 4?

Iron wok 4 feet thick ears wrought iron wok old traditional wok round bottom kitchen chef wok 4 feet wok 46cm.

1 meter is equal to 3 feet, so 1 foot is equal to 1/3 meters =33.3 cm. Ruler1= 33.3 *1.1= 36.6 cm, and ruler 4=46.6 cm.

Iron pot is a traditional kitchen appliance for cooking food. Generally, it does not contain toxic substances, but it is often oxidized in water. The main varieties of iron pots are printing pots, ear pots, flat pots, oil pots and pancake pots. The main component is iron, but also contains a small amount of sulfur, phosphorus, manganese, silicon, carbon and so on.