Device for measuring the amount of movement of a straightly moving object

摘要: A device for measuring the amount of movement a straightly moving object is provided with sensor unit made up and stationary members arranged to form two pairs capacitors therebetween. The confronting surfaces are graduated gear-like cuts so that while capacitances maximum, capacitance other minimum. further comprises pair oscillators coupled capacitors, mixer connected difference in between obtained as frequency, which processed provide object.