If you are measuring by pitch as opposed to angles, line up the desired pitch, as indicated by the common edge, on the same edge as the pivot.Line up the desired angle, as indicated on the hypotenuse, on the same edge as the pivot.The corner where the hypotenuse and lip meet should move, not the pivot. Rotate the lip away from the edge of the material around the pivot.Lay the square on the surface of the material so the lip extends down the long side of the material.Use this measurement as an alternative to common. Find the degrees along the hypotenuse.This measures pitch (generally used for roof pitch). Locate the common label along the long inner cutout.Follow the lip and adjacent leg to where they form a 90 degree angle. ![]() Locate the hypotenuse, running at a 45 degree angle from the legs.This edge keeps the rafter angle square from lying flat. An abundance of descriptive drawings and tables have been added, as well as an index for rapid access to each section.ĭownload the Rafter Angle Square Construction Guidebook (3.2MB PDF) All of the necessary instructions for basic roof construction are included in our accompanying PDF, along with other uses of the square such as stair layout and the framing of a solar panel support. The Rafter Angle Square also makes an excellent right angle guide for an electric saw to run against.īoth the professional tradesman and the handyman will find the Rafter Angle Square convenient to use. This gives you the accuracy you need with the convenience of using one number to work with. The rafter scales are laid out mathematically to take the time-consuming calculations out of your layout work. The easy-to-read angle scale allows you to find any angle from 0 degrees to 180 degrees for many of your special designs such as carvings, picture framing, furniture, room dividers, shadow boxes, "cut-outs", routings and more. Johnson's Rafter Angle Square has a handy 6" rule for quick measurements and scribing. With one number on our square you can frame a roof or a solar panel support, or layout stairs, cabinets, trim work, or many other construction projects. Speed the job of rafter or angle layout by using our Rafter Angle Square, also known as a square. View all construction squares from Johnson Level. How to Cut Rafters with a Rafter Angle Square. ![]()
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