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Is Your Framing Square Square?
First: To check the accuracy of your square, place it along the straight edge of a board and draw a
perpendicular line.
Second: Now flip the square over and check to see if it lines up with the pencil line you just drew. If not, see
photos below.
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Center Punch. Strike the inside corner of the square with a center punch to open up the legs or the outside
corner to close them.