By holding the lip of the speed square against the bottom edge and pressing down on the top, you can use it as a saw guide to get perfectly straight cuts. You can also flip it around to cut at a ...

A speed square is handy for marking cuts, finding angles, and more. Here are a few good reasons why no toolbox should be without one.

The Rafter Square, or Speed Square, does more than mark perpendicular lines. Here's how to make sense of all the numbers on your square and get the most out of this tool.