A hand tool is a device for doing a
particular job that does not use a motor, but is powered solely
by the person using it.
Examples are almost endless, from general tools like the hammer
to specific tools like calipers. Some hand tools are mounted to
walls, such as pencil sharpeners.
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A power tool is a tool powered by an
electric motor, a compressed air motor, or a gasoline engine.
Power tools are classified as either stationary or portable,
where portable means hand held.
Common power tools include the drill, various types of saws, the
router, the electric sander, and the lathe.
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