Persian wheel is also called Rehat locally in the villages of Rajasthan. The Persian wheel is a mechanical water lifting device operated usually by draught animals like bullocks, buffaloes or camels. It is used to lift water from water sources, typically from open wells.
Several small pots are attached to a long chain, revolved by the two gear wheels that together make up a system. The pots each dip and swallow water from the well and then pours itself out to a metallic trough which in turn empties into an intricate network of troughs and channels that distributes water adequately through the cropped area.
The Persian wheel still exists in some parts of India especially in parts of Southern and Eastern Rajasthan and in the Indo-Gangetic plain where the groundwater aquifers are still shallow.
This system works with farmers to ensure the efficient use of water and allows the Persian wheel as a symbol of sustainable and carbon-free water use to continue its existence. Because with its disappearance, water culture and history of at least 1200years old would vanish.