. . "0"^^ . "0"^^ . "an alloy of iron and nickel having a low coefficient of thermal expansion; used in tuning forks and measuring tapes and other instruments"@en-us . . . . . . "Invar"^^ . "14921414-n"^^ . "Invar"@en-us . . "114072657"@en-us . "114921414"^^ . .