A power tool is a tool that is actuated by an additional power source and mechanism other than the solely manual labor used with hand tools. The most common types of power tools use electric motors. Internal combustion engines and compressed air are also commonly used.
Here's a pretty good deal on an entry-level Hitachi angle grinder, seen at Mitre 10 Mega Albany. (Don't you just hate it when the specials are inconsistent across their store network?) …
