Mobile measuring appliance, in particular a hand-held measuring appliance, for non-destructive determination of a moisture present in a workpiece, said mobile measuring appliance comprising a housing, provided in which there is at least • a first sensor apparatus, a second sensor apparatus, • a control apparatus for actuating the first sensor apparatus and/or the second sensor apparatus, • an evaluation apparatus for evaluating at least one measurement signal supplied by the first sensor apparatus and/or the second sensor apparatus, and • an apparatus for supplying energy to the measuring appliance, wherein the first sensor apparatus comprises at least one nuclear magnetic resonance sensor (NMR sensor), wherein the nuclear magnetic resonance sensor comprises an apparatus for detecting a magnetic field change, in particular a reception coil for detecting a magnetic field change, a first apparatus (46, 46') for generating a first magnetic field for aligning nuclear spins and a second apparatus, in particular a radiofrequency coil, for generating a second magnetic field for exciting the nuclear spins, said second magnetic field superimposing the first magnetic field, wherein the control apparatus comprises at least one control unit for controlling the second apparatus, wherein the control unit is provided for modifying the second magnetic field, in particular for generating pulse sequences, and the second sensor apparatus comprises at least one sensor from a group of capacitance sensors, microwave sensors, ultrasonic sensors, resistance sensors, conductivity sensors and radar sensors, in particular ultra-broadband radar sensors and broadband impulse radar sensors, wherein the evaluation apparatus is configured to obtain an information item about the moisture present in the workpiece by evaluating a measurement signal supplied by the first sensor apparatus, wherein the control apparatus is configured, using the information item, for the optimized actuation of the second sensor apparatus and/or the evaluation apparatus is configured, using the information item, for the optimized evaluation of measurement signals supplied by the second sensor apparatus. • a first sensor apparatus, a second sensor apparatus, • a control apparatus for actuating the first sensor apparatus and/or the second sensor apparatus, • an evaluation apparatus for evaluating at least one measurement signal supplied by the first sensor apparatus and/or the second sensor apparatus, and • an apparatus for supplying energy to the measuring appliance, wherein the first sensor apparatus comprises at least one nuclear magnetic resonance sensor (NMR sensor), wherein the nuclear magnetic resonance sensor comprises an apparatus for detecting a magnetic field change, in particular a reception coil for detecting a magnetic field change, a first apparatus (46, 46') for generating a first magnetic field for aligning nuclear spins and a second apparatus, in particular a radiofrequency coil, for generating a second magnetic field for exciting the nuclear spins, said second magnetic field superimposing the first magnetic field, wherein the control apparatus comprises at least one control unit for controlling the second apparatus, wherein the control unit is provided for modifying the second magnetic field, in particular for generating pulse sequences, and the second sensor apparatus comprises at least one sensor from a group of capacitance sensors, microwave sensors, ultrasonic sensors, resistance sensors, conductivity sensors and radar sensors, in particular ultra-broadband radar sensors and broadband impulse radar sensors, wherein the evaluation apparatus is configured to obtain an information item about the moisture present in the workpiece by evaluating a measurement signal supplied by the first sensor apparatus, wherein the control apparatus is configured, using the information item, for the optimized actuation of the second sensor apparatus and/or the evaluation apparatus is configured, using the information item, for the optimized evaluation of measurement signals supplied by the second sensor apparatus.