Where does “bascula” come from?

bascula (Italian) comes from French bascule, from French bacule, from Old French bacul, from Old French cul, from Latin cūlus, from Proto-Celtic kūlos, from Proto-Indo-European ḱuH-ló-, from Proto-Indo-European (s)kewH- — to cover, bedeck; cover.

bascula (Italian): weighbridge; third-person singular present...