INCLINED PLANE AND FRICTION BOARD (0137) A wooden plane board 600 x 75mm hinged at one end to another baseboard provided wit h a pulley at the other. A movable block present between baseboard and inclined plane enables the inclination of the plane to be varied. Includes reversible friction slider 100 x 65mm, with its one size cut to have half the contact area to facilitate the observation of results in different situations. Complete with metal roller and weight pan. Qty :