Definition of Roberval balance in US English:

Roberval balance

(also Roberval's balance)

noun

  • A type of balance designed so that the indicated weight is unaffected by the position of the loads in the pans.

Origin

Mid 18th century. In some forms from the genitive of the name of Gilles Personne de Roberval, French mathematician, who presented a balance of this type before the French Academy of Sciences in 1670 + balance. In some forms from the name of Gilles Personne de Roberval + balance.