Section 142(1) in The Ajmer Tenancy and Land Records Act, 1950
(1)The Central Government may, by notification in the official Gazette, order that in any estate mentioned in the Second Schedule or group of such estates or in any other area of the State, a preparation or revision of the record-of-rights or survey or re-survey, or the determination of rent-rates for any class or classes of soils, or some or all of these operations be taken in hand, whether by revision of the most recent records and rent-rates or otherwise, and may appoint an officer as a record officer or rent-rate officer to be in charge of record or rent-rate operations, as the case may be, and as many assistant record officers as it deems fit.