Using this app, the amount of land of any one or more persons can be calculated from the old ledger- e.g., CS, SA etc. Any land can be measured. Besides, in the old ledger, the existing ana-ganda-kara-kranti calculation, land measurement method, different units of land measurement and different formulas for land measurement, land measurement method from mouza map on Gunia scale, land measurement method with chain etc. can be known.