Honeywell Microelectronics & Precision Sensors is a leading supplier of application-specific integrated circuits for the aerospace and military markets and also manufactures sensors and electronics for a variety of commercial applications. Honeywell's magnetoresistive (MR) sensors are the most sensitive low-field, solid-state magnetic sensors on the market and can be used to measure the direction and magnitude of magnetic fields from 70 mG (7 nT) to 6 G (0.6 mT). Honeywell's magnetoresistive sensors determine changes in the Earth's magnetic field due to the presence of ferromagnetic objects, or the position of ferromagnetic objects within the Earth's magnetic field. High-speed moving vehicles and other ferrous objects can be detected using high bandwidth. These sensors have a non-contact design and the working distance depends on the ferromagnetic mass being measured.