Levers /
Chris Oxlade.
- Chicago, Ill. : Heinemann Library, c2003.
- 32 p. : col. ill. ; 23 cm.
- Useful machines Heinemann first library .
Includes bibliographical references (p. 32) and index.
What is a lever? -- What does a lever do? -- How does a lever work? -- Loads and efforts -- Levers together -- Pivots at the end -- More levers -- Levers for cutting -- Levers for turning -- Levers for digging -- Working levers -- Levers for control -- Amazing lever facts.