![]() Ruler increments (in 1⁄8, 1⁄10, 1⁄12, and 1⁄16 inch) are printed on both the inside and outside edges be careful to read the correct side and measurement. It’s also good for laying out rafters and stair stringers. You can also use it as a guide (fence) when cutting drywall.Ĭabinetmakers like this fixed square for checking corners and edges, but for most carpentry tasks, a combination square is more versatile.Ĭonsisting of a long blade and shorter, narrower tongue, this L-shaped square comes in handy when marking up wide boards and sheet stock or checking their squareness. With its 4-foot blade, a drywall square is ideal for laying out cut lines on standard-size sheets of plywood, drywall, and other board materials. You can use a sliding T-bevel together with a compass to bisect angles for mitering, It won’t measure the angle, but that doesn’t matter-a match is what you’re looking for. The movable blade allows you to copy an angle and transfer it onto moldings, lumber, or other materials. | Photo by Nedjelko Matura Types of Squares Try SquareCabinetmakers like this fixed square for checking corners and edges, but for most carpentry tasks, a combination square is more versatile. Use the basic models we show here whenever you measure and cut add specialty squares, such as a drywall square or a sliding T-bevel, as your current projects require. You’ll find many types of squares on the shelf at the home center, but you don’t need them all. “I use the 12-inch one as a crosscut fence for my saw and router, and the 6-inch one is always in my apron pocket - it’s especially handy when I’m up on a ladder.” On the job, though, Tom does most routine carpentry with a couple of speed squares. And anytime he’s working in the shop, he keeps a combination square, with its sliding head, close at hand for gauging lines. Tom grew up using a traditional L-shaped framing square, which he still prefers for laying out a pattern rafter or a stair stringer. It gives you 45- and 90-degree angles, it’s also a ruler, and it’s not hard to measure other angles with it, too.” “The first square you buy should be a 12-inch speed square,” says Tom Silva, This Old House general contractor. Most provide a fixed 90-degree angle in various forms, and some can help copy or draw other angles. When corners meet at 90 degrees, drawers fit snugly, windows close tight, and walls stand straight. A right angle is the standard by which all carpenters build.
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