In a previous article (see “Rafter Square Basics: Foundation Layout Jan 6, 2011 ยท The speed square, also called a rafter-angle or triangle square, is an extremely versatile tool originally intended to help carpenters quickly and accurately mark roof rafters. This beginner's guide provides a detailed look at how to use a rafter square effectively in woodworking. 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. This versatile angle square works as a protractor, rafter square and combination square. In a previous article (see “Rafter Square Basics: Foundation Layout . A double roof (using a Norman truss), common rafters supported by principal rafters (top chords in this case Find Rafter/Speed square Silver squares at Lowe's today. Out-of-square corner angle finder, and 7. The aluminum is sturdy, lightweight, and has a matte finish to reduce glare. Saw guide, 4. Key features include a base, a protractor edge for angles, a pivot Find many great new & used options and get the best deals for Carpenter Square Set - 7” Rafter Square and 12” Right Angle Ruler, Aluminum A at the best online prices at eBay! Free shipping for many products! The roof pitch calculator finds the length of the rafter and the roof slope (in degrees and in percent).

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