AP and the Nivachron hairspring
By: Glenn_2004 : February 21st, 2023-12:39
Dear all, Five years ago, it was announced that AP and Swatch developed a new non-magnetic hairspring. See, for example, here . Do you know if it is used in current calibers, in particular in the 4302 ? (A simple MacBook generates field of 80 000 A/m at t...