THE INCLINED PLANE, WEDGE, 

 AND SCREW. 



Inclined Plane. Effect of a Weight on. Power of. Roads. Power oblique to the Plane. Plane 

 Bometimes moves under the Weight. Wedge. Sometimes formed of two inclined Planes. More 

 powerful as its Angle is acute. Where used. Limits to the Angle. Screw. Hunter's Screw. 

 Examples. Micrometer Screw. 





