an alloy of iron and nickel with a negligible coefficient of expansion, used in the making of clocks and scientific instruments
Today’s NYT Connections Answers Oct 22, #499 - Daily Updates & Hints
Today’s Wordle Answer Oct 22 #1221- NYT Wordle Hints & Updates
NYT Mini Crossword Answers Today - The Mini for Oct 22 Solved
NYT Strands Today - Hints, Spangram & Answers for October 22