Compass Driving Records
Compass Driving Records. Post navigation Use the digital compass only for basic navigation assistance. The SERF magnetometers only operate in small magnetic fields. Military[ edit ] For defensive purposes, navies use arrays of magnetometers laid across sea floors in strategic locations i. Magnetometers have a very diverse range of applications, including locating objects such as submarines, sunken ships, hazards for tunnel boring machines , hazards in coal mines, unexploded ordnance, toxic waste drums, as well as a wide range of…