The setup is a motorized unit consisting of acamshaft driven by a variable speed motor. The free end of the camshaft has afacility to mount the cam easily. The follower is properly guided in gunmetalbushes and the type of follower can be changed according to the cam under test.Graduated circular protractor is fitted co-axial with the shaft and dial gaugefitted on the follower shaft, is used to note the follower displacement for theangle of cam rotation. A spring is used to provide controlling force to thefollower system. Weights on the follower shaft can be adjusted as per therequirement. An arrangement is provided to regulate the speed. The apparatus isvery useful for testing the cam performance for jump phenomenon duringoperation and the effect of change of inertia forces on jump action ofcam-follower during operation can be observed. Three sets of cams and followersare supplied with the apparatus. These are already hardened to reduce the wear.