How to Use a Rafter Square 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.

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The Speed Square was designed in 1925 as an aid to carpenters framing homes, and ...

When it comes to precision in framing and carpentry, the right tools can make all the difference. The Johnson Johnny Square Mach-1 stands out as a modern take on the classic rafter square, offering ...