This unit is designed to study the working of cam and follower mechanism. For example cams are used in I.C engines to open and close inlet and exhaust valves on time with great accuracy.
The apparatus consists of cam and follower, dial gauge and a protector. The protector is used to measure the angle of cam at any instant. As the cam rotates, the follower is displaced. Dial gauge is used to measure the displacement of the follower.