... , DC motor rotation for CB spring stretch.-Universal sensor clamp, suitable for almost all CB action device ... -θ-CO-t-CO,CO-t-CO-Selectable installing the sensor on one of the A-phase, B-phase ... to test and display the gap wave form, bouncing amplitude, bounce ,over-travel,-Be able to test ... motor, 1 set-Signal cable connecting to sensor,1 set, with two sensor. One is displacement transducer ,another is ...