Persian Wheel used by the Sieks [sic] & in the Districts North of Delhi
Draughtsman: Smith, Robert (1787-1873)
Medium: Pencil on paper
The Persian Wheel is a device driven by a bullock (or buffalo or camel) whose motion turns a horizontal wheel which in turn drives a vertical wheel connected the the third, larger one which reaches the canal. Water is lifted by the pots on this wheel and transferred into a channel for irrigation. The invention of the Persian Wheel greatly improved agricultural productivity on the sub-continent with one wheel irrigating up to one hectare of land.