164541 ⎘
Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes; Magnetic compasses with north-seeking magnetic elements, e.g. needles; Observing the compass card or needle using electric pick-offs for transmission to final indicator, e.g. photocell
Optoelectronic measuring device with magnetic compass and compensation functionality
#2Integral magnetic compass for establishing deviations in real time
#3Method for operating a display device driven by at least one stepping motor
#4Electronic device and method for indicating direction in electronic device