1)length measurment 2)measurement range CWS100: 175mm, 1800mm; 3)easy to install, anti-dust and vibration Advantage * compact ... to install, anti-dust and vibration.* measurement range CWS175: 175mm, 1800mm;* groove cable, each circle trip is the same, high repetition ... contact us! Cable extension displacement sensor CWS175, Measure range 175mm,1800mm