This is an economical form of inclined
plane consisting of 60 x 10 cm board either with glass top or sunmica top,
hinged to the base board of size 45 x 10 cm. The pulley is stretched to one end
of the upper board. The upper board (plane) can be set at any angle by clamping
the wing nut. Complete with graduated aluminum arc and iron N.P. Roller,
Supplied with wooden carriages of 10 x 10 cm with look for determine the force
of friction.
