A wooden planed board 600 x 75mm. The board is hinged at one end to a wooden base board and the angle of incline can be fixed in a number of positions by use of a moveable block. Also included is a reversible friction slider (100 x 65mm), one side of which is cut so it has only half the area in contact with the plane to allow various dynamics situations to be explored.

Complete with brass roller 75 x 25mm and pulley wheel but WITHOUT masses or scale pan.