A fluid property measurement system uses an analog-to-digital converter combined with a multiplexer to measure voltages at one or more points of a measurement circuit and an algorithm within a microcontroller to calculate a fluid property. A plurality of first legs are connected to outer edges of the flat structures via first rotatable connections. The invention also provides a circuit that is adapted to compensate for curvature in the output of a switched capacitor bandgap reference. The comparing unit compares waveform information stored in the storage unit with waveform information acquired by the waveform acquiring unit at the time of requiring the process of the process.