Measuring device and method for obtaining amount of deviation of measuring device

A measuring device comprising:

• a disc-shaped base substrate;
• a plurality of sensor electrodes arranged in circumferential direction along a periphery of the base substrate;
• a high frequency oscillator configured to apply a high frequency signal to the sensor electrodes;
• a plurality of C/V conversion circuits, each being configured to convert a voltage amplitude at a corresponding sensor electrode among the plurality of sensor electrodes to a voltage signal indicating an electrostatic capacitance;
• an A/D converter configured to convert the voltage signal outputted from each of the C/V conversion circuits to a digital value;
• and
• a switching mechanism configured to switch each sensor electrode of the plurality of sensor electrodes between a first state in which the sensor electrodes are electrically connected to the C/V conversion circuits and a second state in which a plurality of electrode pairs, each pair including two sensor electrodes adjacent in the circumferential direction among the sensor electrodes, are connected to different C/V conversion circuits among the C/V conversion circuits.