We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Also known as a rafter square or triangle square, the speed square, invented by Albert ...

Speed squares are a helpful saw guide for cutting 45- and 90-degree angles. The plastic squares are thicker than most metal ones, making them a good fence for the shoe of a circular saw to ride along.

If you’re not sure what a speed square is, or how you can put yours to good use, this video lesson shows you everything you need to know about one of the best tools out there. In this video from the ...

A speed square has many obvious uses for marking up your building materials. Here's a small hidden feature you may not know about: it can also draw perfect circles. Most speed squares have a notch at ...

A Speed Square, also a rafter or triangle square, covers many uses. Understand how to use a Speed Square and how it can be used in various home improvement DIY projects. Here are a few of those ...