The speed square has a basic rule and a lip that fits over the edge of a board. Typically, rafter angle degrees and angle indicators from 1 to 90 degrees are marked on the diagonal edge.
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2. USING THE SQUARE EDGE
When cutting lumber, you can square the edge and quickly mark parallel 90 degree cuts.
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3. USING THE DIAGONAL EDGE
The diagonal edge is a perfect 45 degrees. Flip a board on edge and make quick marks for 45 degree cuts.
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4. USING SPECIFIC ANGLES AND PIVOT POINTS
You can also mark specific angles for soffit, fascia, rafter ends, or miter cuts. For example, using the corner as a pivot point, line up the 30 degree marking with the edge of the board and mark your line on the square edge.
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5. SCRIBING PARALLEL LINES
Scribe cut lines on plywood or drywall by lining up the fence with the edge of your board. Place the tip of a pencil in the measurement notches on the edge. Then, slide the square down the edge of the board, dragging the pencil line along with it. The line will be perfectly parallel to the edge.
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6. USE AS A SAW GUIDE
You can hold it in place to use as a guide to keep a saw blade in line.
The rafter angle square, also known as the speed square, helps you mark angles for soffit, fascia, rafter ends, or miter cuts. With its built-in shortcuts, it’s also helpful to have for some general tasks too.
Products: T-Square6 Steps