Charles Edouard Guillame was the person that discovered Invar and Elinvar, nope they may be surely not islands, but nickel based alloys which will withstand magnetic fields allowing an eye fixed to be capable of accurate. Other alloy-based materials likewise incorporate Glucydur and Nivarox of widely used by watchmakers from the 1950's.Apart from using alloys, yet another method of creating non-magnetic watches continues to be a greatly conductive material to accommodate the movement inside the case.
As mentioned previously it had become Vacheron Constantin that first developed these watches; in 1915 they introduced the rather first anti-magnetic pocket watch. That it was then accompanied by Tissot's non-magnetic wristwatch in 1920, and therefore the first anti-magnetic chronograph by Vacheron Constantin in 1954.
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