The antimagnetic toolwatch; Rolex Milgauss 116400
The Rolex Milgauss 116400 and the Milgauss in general is a toolwatch with a lot of history. The name Milgauss is chosen because of the specifications of the watch, the watch is capable to withstand magnetic fields up to 1000 Gauss which is the unit of magnetic fields. Mil comes from mille which means a 1000 and therefore the name Milgauss was chosen.
In 1956 the first Milgauss was issued (reference 6541) and this antimagnetic watch was specifically designed for working in power plants, medical facilities and research labs like CERN in Geneva. This watch was improved trough the years and in 1988 the model was completely discontinued until 2007 when Rolex released the newest model; the 116400.
Again equipped with a magnetic shield which protects the movement in environments with magnetic fields. The size of the case for this particular Milgauss is 40mm in diameter, the material used is stainless steel (904L).