SerpApi.Org
Find Roof Pitch
- Place the pivot point against the shingles.
- Then place a torpedo level on the fat base of the speed square.
- Adjust the square until the level is level.
- Read the pitch on the side of the speed square.
- Note: The pitch tells you the amount of vertical rise (in inches) for every 12 inches of run.
Mark Angles
- Swing the speed square until you read the desired angle on the board’s edge.
- Mark the angle on the board.
- Note: The example shows a 33-1/2 degree angle.
Guide Saw Cuts
- Cut 45- and 90-degree angles by using the speed square as a guide.
- Pro tip: This method works better (and safer) when right-handed users have a circular saw with the motor to the right of the blade (like in the photo).
