Rolex
Rolex SA () is a Swiss luxury watchmaker. Originally founded as "Wilsdorf and Davis" by Hans Wilsdorf and Alfred Davis in London in 1905, the company registered "Rolex" as the brand name of its watches in 1908. In 1919, the company moved its base of operations to Geneva, Switzerland in order to avoid heavy taxation from a recovering post-war Britain, and "Montres Rolex S.A." was registered as the new company name by Hans Wilsdorf in Geneva in 1920. Since 1960, the company has been owned by the Hans Wilsdorf Foundation, a private family trust.
Rolex Milgauss
The Rolex Oyster Perpetual Milgauss is a wristwatch model introduced by Rolex in 1956 with model number 6541. The Milgauss was designed as an antimagnetic watch specifically for those who worked in power plants, medical facilities and research labs (like CERN in Geneva) where electromagnetic fields can cause havoc with the timing of a watch. The current (post-2007) model Milgauss is equipped with a non-magnetic alloy (Parachrom-Blu) hairspring and a movement encased by a magnetic shield, most likely composed of a high magnetic permeability material (see Mu-metal or Permalloy). The name "Milgauss" is derived from the Latin "mille", which means one-thousand, and "gauss", the unit of a magnetic field. This model is so named because it can withstand a magnetic flux density of 1,000 gauss.