Ask any framer, roofer, or finish carpenter to name the one layout tool they refuse to leave on the truck, and the answer is almost always the same: the triangular speed square. This deceptively simple piece of aluminum has been solving layout problems on job sites for nearly a century, and the Johnson Speed Square … Read more
Walk into any framing crew in America, and you’ll see a triangular aluminum tool riding in a carpenter’s pouch right next to the hammer. The Johnson speed square — the iconic rafter square invented by Alvin J. Johnson in 1925 — is one of those rare tools that can genuinely replace a protractor, a framing … Read more
Every serious builder eventually hits the same wall: the standard 7-inch speed square works beautifully for rafters and small trim, but the moment the task shifts to laying out a 48-inch-wide sheet of plywood, a long LVL beam, or a full wall of studs, that compact triangle suddenly feels insufficient. Accuracy on large-scale projects is … Read more
Long boards and 4×8 sheathing panels are where layout errors come home to roost. A small deviation in a pencil mark at one end of a long stud or a 48-inch-wide sheet of plywood translates into a visibly crooked cut, a gap-filled joint, or a structural connection that just won’t land. The speed square is … Read more
Framing, roofing, and finish carpentry demand precision, and every serious tradesperson knows the pain of a layout tool that compromises accuracy for speed. A standard combination square or a battered protractor can handle basic lines, but the moment a project calls for repetitive angle transfers, roof pitch calculations, or miter cuts on irregular stock, the … Read more
The speed square is one of the most iconic layout tools in construction, yet the modern speed square with angle finder has introduced a twist that forces professionals and DIYers to reconsider a tool they thought they knew. The choice between these two designs affects how quickly you can duplicate an existing angle, how many … Read more
Every workshop drawer contains a triangular aluminum plate that most DIYers underuse. The speed square — also known as a rafter square or carpenter’s square — is arguably the most versatile layout tool ever invented, capable of marking 90° and 45° lines, finding any angle from 0° to 90°, calculating roof pitch, and even serving … Read more
Framing a hip or valley roof is one of the most intimidating tasks a DIYer or even a seasoned carpenter can face. The compound angles, diagonal runs, and tricky intersections of hip and valley rafters confuse even experienced builders who are comfortable with common rafters. The humble speed square—often dismissed as a simple protractor for … Read more
Few tools earn a permanent spot in a carpenter’s apron like the Swanson Speed Square. Since Albert Swanson first sketched the design in 1925, this humble aluminum triangle has framed roofs, laid out stair stringers, and guided circular saws on millions of job sites. But when Swanson released the Speed Square Pro with its sliding … Read more
Ask any seasoned carpenter what lives in their apron pocket, and the answer more often than not is a battered, chalk-dusted aluminum speed square. The humble triangle has been the backbone of framing layout for nearly a century, but not all speed squares are created equal. The Swanson Speed Square Pro 7″ takes the legendary … Read more