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 ...

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 ...