Abstract: A sample device to be inserted inside an external tube, having a substantially circular cross-section, may carry a substantially circular plate as part of a turntable to be rotated within the external tube around two substantially orthogonal axes. An embodiment of the sample device may include two substantially coaxial tubes, with the turntable being supported by the outer tube, and two meshing gears, with the first gear being connected to the inner tube and the second gear being connected to the turntable. Another embodiment may include a special cable guide being connected with its first end with the turntable and its second end, being substantially perpendicular to the first end, with the supporting means, with the inner tube, the outer tube and/or the cable guide being connected with a driving unit. Preferably, the surface of the plate to be rotated within the external tube is maximized.

Abstract: A magnetic calibration device comprises a mount supporting a magnetic sensor card being detachably attached and comprising at least one magnetic sensor to be calibrated and connected to a first analog electronic circuit with a current source and a first analog to digital converter. A coil card is further detachably attached and comprises three coils arranged substantially orthogonal to each other and connected to a second analog electronic circuit with a second analog to digital converter. A connection such as a cable or a wireless link provides a supply voltage to the first and second analog electronic circuits, respectively, and guides digital signals from the first and second analog to digital converters, respectively, to at least one processing unit. A magnet generates a substantially homogeneous and constant calibration magnetic field, and a rotator rotates said cards in said calibration magnetic field around two substantially orthogonal axes.

Abstract: The invention refers to a sample device to be inserted inside an external tube, having a substantially circular cross-section, and carrying a substantially circular plate as part of a turntable to be rotated within the external tube around two substantially orthogonal axes. Two substantially coaxial tubes, with the turntable being supported by the outer tube, and two meshing gears, with the first gear being connected to the inner tube and the second gear being connected to the turntable, and/or a special cable guide being connected with its first end with the turntable and its second end, being substantially perpendicular to the first end, with the supporting means, with the inner tube, the outer tube and/or the cable guide being connected with a driving unit, are provided for maximizing the surface of the plate to be rotated within the external tube.

Abstract: The invention refers to a magnetic calibration device comprising a mounting means designed to support at least one magnetic sensor card being detachably attached and comprising at least one magnetic sensor, in particular in form of a Hall sensor, to be calibrated and connected to a first analog electronic circuit with at least one current source as well as at least one first analog to digital converter and at least one coil card being detachably attached and comprising three coils arranged substantially orthogonal to each other and connected to a second analog electronic circuit with at least one second analog to digital converter; at least one connection means, in particular in form of a cable or a wireless link, for applying at least one supply voltage to the first and second analog electronic circuits, respectively, and for guiding digital signals from the first and second analog to digital converter, respectively, to at least one processing unit; a magnet for generating a substantially homogeneous and con