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Brazilian Weights

The weights in ordinary use are as follows, the Quintal 1 Arroba Gold and silver are weighed by the Marco of 7 ounces 74 dwts Troy. 1 Marco 1 Onça 1 Oitava 8 Onças = 8 Oitavas = 72 Granos equal to 40 dwts. Troy.

Precious stones are sold by the Quilate, 1 Oitava 1 Escrupulo 1 Quilate = = 3 Escrupulos 3 Quilates 4 Granos Brazilian Mayo is equivalent to 22+ imperial