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The long or imperial hundredweight of 8 stone (112 lb or 50.802345 kg) sees informal use in the imperial system but according to Schedule 1, Part VI of the Weights and Measures Act 1985, is no longer to be used for trade after the Act came into force.
Yottagram or yottagramme is equal to 1024 gram (unit of mass), comes from a combination of the metric prefix yotta (Y) with the gram (g). Plural name is yottagrams.