411 REFERENCE · Wiktionary
Roberval balance
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Alternative forms
en Roberval's balance
Etymology
Presented to the French Academy of Sciences by the French mathematician Gilles Personne de Roberval in 1669.
Noun
A kind of weighing scale with two identical horizontal beams attached, one directly above the other, to a vertical column.
en eponyms