A man who collects lan revenue is known as Patwari. We can also say that A person of revenue department who is authorised to collect revenue on account of land from farmers on bahalf of govt.
Patwari is a term used in Pakistan and India for a land record clerk in a tehsil or sub-Division. The lowest state functionary in the Revenue Collection system, his job encompasses visiting agricultural lands and maintaining record of ownership and tilling (girdawari). Due to their primary base in rural areas, where literacy and wealth is low, they yield a larger-than-life influence in the local community and are notorious for demanding bribe and changing land records at will. With recent computerization of land records, their ability to manipulate records has reduced. Patwari reports to tehsildar or a chief clerk of Tehsil 's land records.
Measuring land and keeping land records is the main work of the Patwari.the patwari is known by different names- kanungo etc. the patwari is also responsible for organising the collection of land revenue from the farmers