Omega wasn't the only watch manufacturer creating this kind of watch. Rolex famously has the Milgauss, which takes its name directly from the 1,000-Gauss resistance (mille being French for 1,000) and was developed in partnership with the Swiss laboratory CERN. The watch was produced from 1956 until 1988 (with there being two major generations in that time frame, the 6543/6541 and the 1019), before it was again revived in 2007. Likewise, IWC has the Ingenieur, which actually came before either the Milgauss or the Railmaster, debuting in 1954. By that time, IWC already had a history of producing anti-magnetic watches for pilots, so the Ingenieur seemed a logical next step. Two decades later, it would get an overhaul by Gerald Genta in the form of the Ingenieur SL and today the brand has kept the line alive as a collection of racing-inspired watches, though that's a story for another time.