Roberval's balance
noun
Ro·ber·val's balance
ˈrōbə(r)ˌvȯlz-
: a balance in which the pans are fixed to the prolonged vertical sides of a jointed parallelogram whose two other sides are pivoted in their midpoints to a vertical post
Love words? Need even more definitions?
Merriam-Webster unabridged
Share