Generally speaking, the measuring system of digital caliper concludes three parts
. The first one is capacitive sensor-----it can transmit the measurements into electronic signal. It means that the capacitive sensor of digital caliper is a kind of measuring system which bases on static electricity induction theory. And the second part is the tracing phase angle measuring circuit. As its application, it is not so sensitive with the varying value of the input signal, thus digital caliper has a pretty strong ability for the interruption. The last one comes to decoding display circuit.