Charles Edouard Guillame was the one who discovered Invar and Elinvar, nope they're not islands, but nickel based alloys that could withstand magnetic

Charles Edouard Guillame was the one who discovered Invar and Elinvar, nope they're not islands, but nickel based alloys that could withstand magnetic fields allowing a wrist watch to be accurate. Other alloy-based materials have Glucydur and Nivarox who were key by watchmakers in the 1950's.Besides using alloys, permanently of producing non-magnetic watches is to use an incredibly conductive material to store the movement in the case.

As mentioned previously it had become Vacheron Constantin that first developed these watches; in 1915 they introduced the first anti-magnetic pocket watch. Rrt had been then as well as Tissot's non-magnetic wristwatch in 1920, therefore the first anti-magnetic chronograph by Vacheron Constantin in 1954.

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