4 Chawal (grain of rice) = 1 Dhan (weight of one wheat berry)
4 Dhan = 1 Ratti (Ratti is the seed of the 'Abrus precatorius'. It is a red seed with a black spot at one end. Abul Fazl refers to it as 'Surkh' in Ain-i-Akbari.).
8 Ratti = 1 Masha
12 Masha (96 Ratti) = 1 bhari
24 Ratti (96 Dhan) = 1 Tak