The convenience and versatility of this unit has made it very popular. It consists of a 15 x 60 cm. wooden board with glass top hinged on an iron base. To this is provided a sector with graduated arc and vertical scale. The plane may be clamped at any angle upto 45 degree. A frictionless pulley of 5 cm. diameter is attached to the end by means of a clamp adjustable to any necessary position. Inclined Plane is offered complete with brass roller, cart and pan, but without weights.