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Place the

**framing square**flat near the end of aboard you want to**use**as a**roof**rafter. Align theblade with the bottom edge of the board and the tongue with the**roof**pitch. Then mark the cut. This will be the tail end ofthe rafter, and the cut will be horizontal when the rafter isinstalled onto the**roof**.

Also question is, how do you use a rafter square?

**How to Use a Rafter Angle Square for Rafters**

- Put the square against the surface of the material you want touse.
- Using the pivot point (the notch on the non-lip leg of thesquare), adjust the square until the degree gradation you needlines up with the edge.
- Press the square against the edge.

**SpeedSquare**has a patented feature — the

**diamond**cut, a

**diamond**-shaped cut-out on the ruler edge of the tool. Thisis used for squaring on a line scribed across the board so that youcan then make a perfect 90° line from your scribed angled tothe edge of the board.

Secondly, is a rafter square the same as a speed square?

A **Speed Square** (**rafter square**,**rafter** angle **square**, triangle **square**) is atriangular carpenters' marking out tool manufactured and sold bySwanson Tool Co., Inc. The **Speed Square** combines commonfunctions of the combination **square**, try **square**, andframing **square** into one.

**How to measure an angle with a protractor:**

- Place the midpoint of the protractor on the VERTEX of theangle.
- Line up one side of the angle with the zero line of theprotractor (where you see the number 0).
- Read the degrees where the other side crosses the numberscale.