Sensors measuring a magnetic field and relevant products, namely, position sensor, velocity sensor, acceleration sensor, and temperature sensor; liquid level sensor; rotary position sensors, namely, rotary encoders, contactless potentiometers; valve position sensors; knob position sensors; gear tooth motion sensors in the applications of speed, and direction sensing, linear and rotary speed sensing, linear and rotary position sensing, linear magnetic scales, magnetic encoders; switch sensors for sensing a magnetic field, and for use with utility meters, namely, water, gas, heat meters, and for use with acoustic devices, a hearing aid, proximity switches, speed sensing, rotary and linear position sensing, and solid state switches; linear sensors for use with magnetic field sensing, current sensors, industrial flow meters, displacement sensing, and rotary position sensors, and magnetometers with use for geomagnetic sensing, and displacement and position sensors; computer hardware incorporated with a magnetic sensor for tracking people, objects and pets; magnetic imaging sensors, counterfeit coin detectors, banknote counters and validators, banknote sorters, automated teller machine, ATM, Automated vending machine; magnetic card readers; global position system or satellite navigating instruments, namely, GPS, e-compass, geomagnetic sensors; bar code readers, cash registers; magnets; magnetic scales, magnetic tapes; magnetic encoders; precision measuring gauges using a magnetic sensor; electric distance measuring gauges using a magnetic sensor; a magnetic sensor for electric commutation; electric monitors using a magnetic sensor; automatic regulator using a magnetic sensor; ammeters; current sensor; remote controls using a magnetic sensor; electric measuring gauges using a magnetic sensor;