In 1637, the Nabeshima clan in Hizen Province (Saga Prefecture) regulated the pottery industry and set the number of manufacturing households at 155, and the number of pottery wheels at 155. In other words, each household was to have one wheel. The tax paid by the potter was called “chariot tax. In those days, a potter’s wheel was the only machine used for making ceramics, and the tax was called a tax on the business of manufacturing ceramics. (History of the Arita Pottery Industry)
