| An old hand water wheel An old hand water wheel. Zhen Yuan Wang, "agricultural book" Volume 18: "scratched, the water wheel also. The wheel can be five feet high, radial head only six inches wide, such as water reservoir on the farm, can use this with, first at the shore side of the excavation into the groove Jun , and spoke wheel, with wide, then stand An aircraft wheel spokes and a half in the tank, the axle end, pass through to iron hook wooden crutches, Kazuo enforcement and out of the wheels are turning, the public spoke through the slot, wiping ashore , irrigation field to facilitate car bucket. " |
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