A basic combination square has three main parts: a handle to measures angles, a metal ruler, and a thumb screw to lock the ruler in place. When taking a measurement, the ruler slides through the ...

The Pittsburgh 12-Inch Combination Square Set is available for just $7.99 and includes additional center and protractor heads.

Today, Copley Square is poised to benefit from an updated design and a $15.5 million investment by the city (“Copley Square plan final,” Business, April 30).

Of course, you can mark 45-degree lines with a combination square, but its handle (fence) is only about 3 inches long, which can lead to imprecise markings.

Roofus Square “Introducing Roofus, a game-changing new invention for carpentry and other trades such as steel fabrication and roof plumbing. Do you prepare and cut rectangular building materials ...

A speed square can do both of these tasks as well, but a combination square beats a speed square in its ability to mark depths, heights, and step-offs. The ruler can be adjusted on the slide to a ...