Optoelectronic measuring device having an electronic magnetic compass and a compensation device assigned to the magnetic compass for compensating device-fixed interference fields and is designed to occupy at least two defined, repeatable operating states and generates a different device-fixed interference field in each of the operating states. The measuring device is designed to occupy at least two defined, repeatable application states, the magnetic compass being exposed to a different external magnetic interference field in each of the application states. The compensation device being designed to measure a first, second and third magnetic field set in a first, second and third overall state of the measuring device, and to determine by means of the processing unit a first, second and third set of parameters based on the first, second and third magnetic field set respectively, and to derive a fourth parameter set based on the first, second and third parameter set.